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1.  Knowledge Economy Core Journals: Identification through LISTA Database Analysis 
Acta Informatica Medica  2013;21(1):60-62.
Knowledge economy has become increasingly broad over the years and identification of core journals in this field can be useful for librarians in journal selection process and also for researchers to select their studies and finding Appropriate Journal for publishing their articles. Present research attempts to determine core journals of Knowledge Economy indexed in LISTA (Library and Information Science and Technology).
The research method was bibliometric and research population include the journals indexed in LISTA (From the start until the beginning of 2011) with at least one article a bout “knowledge economy”. For data collection, keywords about “knowledge economy”–were extracted from the literature in this area–have searched in LISTA by using title, keyword and abstract fields and also taking advantage of LISTA thesaurus. By using this search strategy, 1608 articles from 390 journals were retrieved. The retrieved records import in to the excel sheet and after that the journals were grouped and the Bradford’s coefficient was measured for each group. Finally the average of the Bradford’s coefficients were calculated and core journals with subject area of “Knowledge economy” were determined by using Bradford’s formula.
By using Bradford’s scattering law, 15 journals with the highest publication rates were identified as “Knowledge economy” core journals indexed in LISTA. In this list “Library and Information update” with 64 articles was at the top. “ASLIB Proceedings” and “Serials” with 51 and 40 articles are next in rank. Also 41 journals were identified as beyond core that “Library Hi Tech” with 20 articles was at the top.
Increased importance of knowledge economy has led to growth of production of articles in this subject area. So the evaluation of journals for ranking these journals becomes a very challenging task for librarians and generating core journal list can provide a useful tool for journal selection and also quick and easy access to information. Core journal list and beyond core journal list obtained from this study can be used by librarians and researchers in this field.
PMCID: PMC3610578  PMID: 23572865
core journals; Knowledge Economy; Bradford’s scattering law; Databases
2.  Medline-based bibliometric analysis of gastroenterology journals between 2001 and 2007 
AIM: To analyze the MEDLINE-indexed publications in gastroenterology specialty journals from 2001 to 2007. Special attention was paid to specific types of articles, the number of publications for individual authors and the author count in each journal.
METHODS: The bibliographic entries of papers belonging to journals listed under the subject heading of “gastroenterology” were downloaded from MEDLINE on the PubMed web site. The analysis was limited to journal articles published between January 1, 2001 and December 31, 2007. The analytical dimensions of an article included journal, publication year, publication type, and author name (the last name and initials).
RESULTS: According to MEDLINE, 81 561 articles were published in 91 gastroenterology journals from 2001 to 2007. The number of articles increased from 9447 in 2001 to 13 340 in 2007. Only 12 journals had more than 2000 articles indexed in MEDLINE. The “World Journal of Gastroenterology” had the largest number of publications (5684 articles), followed by “Hepato-Gastroenterology” (3036) and “Gastrointestinal Endoscopy” (3005). Of all the articles published, reviews accounted for 17.2% and case reports for 15.4%. Only 3739 randomized controlled trials (4.6% of all articles) were published and their annual number increased from 442 in 2001 to 572 in 2007. Among 141 741 author names appearing in the articles of gastroenterology journals, 92 429 had published only in one journal, 22 585 in two journals, 9996 in three journals, and 16 731 in more than three journals. The “World Journal of Gastroenterology” had the greatest number of authors (17 838), followed by “Gastroenterology” (12 770), “Digestive Diseases and Sciences” (11 395), “American Journal of Gastroenterology” (10 889), and “Hepatology” (10 588).
CONCLUSION: Global gastroenterology publications displayed a continuous growth in the new millennium. The change was most striking in certain journals. Regular bibliometric analyses on the trends and specific topics would help researchers publish more efficiently and allow editors to adjust the policy more accurately.
PMCID: PMC2699018  PMID: 19533822
Bibliographic databases; Bibliometrics; Biomedical research; Gastroenterology; MEDLINE
3.  Fate of manuscripts rejected by a non-English-language general medical journal: a retrospective cohort study 
BMJ Open  2011;1(1):e000147.
The objective of this study was to determine whether, where and when manuscripts were published following rejection by the Journal of the Danish Medical Association, a general medical journal published in Danish. Similar previous studies have focused on specialty/subspecialty journals published in English.
Manuscripts rejected during a 4-year period were searched for in PubMed and Embase in order to assess the percentage of manuscripts subsequently published in other journals. In addition, characteristics of both the published manuscripts and the journals in which they were evaluated.
Of 198 rejected manuscripts, 21 (10.6%) were eventually published after a median of 685 days (range 209–1463). The majority of these were original research, published in English-language specialty/subspecialty journals. The median number of citations per article was 2–3 (IQR 0.5–9.5, depending on the database searched).
10.6% of the rejected manuscripts were eventually published in other journals, mainly English-language specialty journals. This proportion was considerably lower than that for other journals that have studied the fate of rejected manuscripts. Manuscript translation could be a barrier for resubmitting to English-language journals with larger readerships, thus hindering the dissemination of knowledge to the international community.
Article summary
Article focus
To determine whether, where and when manuscripts were published following rejection by a general medical journal published in a language other than English
Key messages
10.6% of the rejected manuscripts were eventually published in other journals, a proportion considerably lower than that for other journals that have studied the fate of rejected manuscripts
Manuscript translation could be a barrier for resubmitting to English-language journals with larger readerships. Scientific journals publishing in small languages should consider publishing original research in a major language such as English in order to facilitate the dissemination of scientific results
Strengths and limitations of this study
PubMed and Embase were used to search for rejected manuscript eventually published in other (indexed) journals; previous studies have searched only PubMed for rejected manuscripts. However, even when searching both databases, the number of search results (published manuscripts) would most likely be an underestimate, as some manuscripts could be published in non-indexed journals.
This study deals with a general medical journal published in a small language; previous studies have focused on specialty/subspecialty journals published in English.
PMCID: PMC3191426  PMID: 22021776
Medical journalism; medical ethics
4.  Journal Metrics-Based Position of Diabetes & Metabolism Journal after the Change of Its Text Language to English 
Diabetes & Metabolism Journal  2014;38(3):187-193.
After changing its language from Korean or English to English only in 2010, the journal metrics of Diabetes & Metabolism Journal (DMJ) were analyzed to assess whether this change in the journal policy was successful. The journal metric items that were analyzed were the following: impact factor; total citations; countries of authors; proportion of the articles funded out of the total number of original articles; and Hirsch-index (H-index). A retrospective, descriptive analysis was carried out using various databases, such as KoreaMed, Korean Medical Citation Index (KoMCI), KoreaMed Synapse, Web of Science, and Journal Citation Ranking. The journal's impact factor was 2.054, which corresponds to 83/122 (68.0%) out of the 2012 JCR endocrinology and metabolism category. The number of the journal's total citations was 330 in 2013. In addition to Korean authors, authors from 13 other countries published papers in the journal from 2010 to 2013. The number of funded papers from 2010 to 2013 was 65 out of 148 original articles (43.9%). The journal's H-index from KoreaMed Synapse was 7, and that from Web of Science was 9. It can be concluded that changing the journal's language to English was successful based on journal metrics. DMJ is currently positioned as an international journal based on the international diversity of authors and editors, its sufficiently high proportion of funded articles, its relatively high impact factor, and the number of total citations.
PMCID: PMC4083024  PMID: 25003071
Bibliometrics; Databases, bibliographic; Journal impact factor; Korea; Periodicals; PubMed
5.  Tackling the growth of the obesity literature: obesity evidence spreads across many journals 
This study identified the journals with the highest yield of clinical obesity research articles and surveyed the scatter of such studies across journals. The study exemplifies an approach to establishing a journal collection that is likely to contain most new knowledge about a field.
Design and methods
All original studies that were cited in 40 systematic reviews about obesity topics (“included studies”) were compiled and journal titles of where they were published were extracted. The journals were ranked by the number of included studies. The highest yielding journals for clinical obesity and the scatter across journal titles were determined. A subset of these journals was created in MEDLINE (PubMed) to test search recall and precision for high quality studies of obesity treatment (i.e., articles that pass predetermined methodology criteria, including random allocation of participants to comparison groups, assessment of clinical outcomes, and at least 80% follow-up).
Articles in 252 journals were cited in the systematic reviews. The three highest yielding journals specialized in obesity but they published only 19.2% of the research, leaving 80.8% scattered across 249 non-obesity journals. The MEDLINE journal subset comprised 241 journals (11 journals were not indexed in MEDLINE) and included 82% of the clinical obesity research articles retrieved by a search for high quality treatment studies (“recall” of 82%) and 11% of the articles retrieved were about clinical obesity care (“precision” of 11%), compared with precision of 6% for obesity treatment studies in the full MEDLINE database.
Obesity journals captured only a small proportion of the literature on clinical obesity care. Those wishing to keep up in this field will need to develop more inclusive strategies than reading these specialty journals. A journal subset based on these findings may be useful when searching large electronic databases to increase search precision.
PMCID: PMC2888815  PMID: 20029378
obesity; health informatics; clinical trials
6.  Bibliometric Analysis of the Korean Journal of Parasitology: Measured from SCI, PubMed, Scopus, and Synapse Databases 
The Korean Journal of Parasitology  2009;47(Suppl):S155-S167.
The Korean Journal of Parasitology (KJP) is the official journal of the Korean Society for Parasitology which is celebrating its 50th anniversary in 2009. To assess the contributions and achievements of the KJP, bibliometric analysis was conducted based on the citation data retrieved from 4 major databases; SCI, PubMed, Synapse, and Scopus. It was found that the KJP articles were constantly cited by the articles published in major international journals represented in these databases. More than 60% of 1,370 articles published in the KJP from 1963 to June 2009 were cited at least once by SCI articles. The overall average times cited by SCI articles are 2.6. The rate is almost 3 times higher for the articles published in the last 10 years compared to 1.0 for the articles of the 1960s. The SCI journal impact factor for 2008 is calculated as 0.871. It is increasing and it is expected to increase further with the introduction of the KJP in the database in 2008. The more realistic h-indixes were measured from the study data set covering all the citations to the KJP; 17 for SCI, 6 for PubMed, 19 for Synapse, and 17 for Scopus. Synapse extensively picked up the citations to the earlier papers not retrievable from the other 3 databases. It identified many papers published in the 1960s and in the 1980s which have been cited heavily, proving the central role of the KJP in the dissemination of the important research findings over the last 5 decades.
PMCID: PMC2769218  PMID: 19885331
Korean Journal of Parasitology; KJP; bibliometric analysis; citation analysis; journal impact factor; h-index; SCI; PubMed; PubMed Central; Synapse; Scopus; CrossRef; DOI
7.  Assessing availability of scientific journals, databases, and health library services in Canadian health ministries: a cross-sectional study 
Evidence-informed health policymaking logically depends on timely access to research evidence. To our knowledge, despite the substantial political and societal pressure to enhance the use of the best available research evidence in public health policy and program decision making, there is no study addressing availability of peer-reviewed research in Canadian health ministries.
To assess availability of (1) a purposive sample of high-ranking scientific journals, (2) bibliographic databases, and (3) health library services in the fourteen Canadian health ministries.
From May to October 2011, we conducted a cross-sectional survey among librarians employed by Canadian health ministries to collect information relative to availability of scientific journals, bibliographic databases, and health library services. Availability of scientific journals in each ministry was determined using a sample of 48 journals selected from the 2009 Journal Citation Reports (Sciences and Social Sciences Editions). Selection criteria were: relevance for health policy based on scope note information about subject categories and journal popularity based on impact factors.
We found that the majority of Canadian health ministries did not have subscription access to key journals and relied heavily on interlibrary loans. Overall, based on a sample of high-ranking scientific journals, availability of journals through interlibrary loans, online and print-only subscriptions was estimated at 63%, 28% and 3%, respectively. Health Canada had a 2.3-fold higher number of journal subscriptions than that of the provincial ministries’ average. Most of the organisations provided access to numerous discipline-specific and multidisciplinary databases. Many organisations provided access to the library resources described through library partnerships or consortia. No professionally led health library environment was found in four out of fourteen Canadian health ministries (i.e. Manitoba Health, Northwest Territories Department of Health and Social Services, Nunavut Department of Health and Social Services and Yukon Department of Health and Social Services).
There is inequity in availability of peer-reviewed research in the fourteen Canadian health ministries. This inequity could present a problem, as each province and territory is responsible for formulating and implementing evidence-informed health policies and services for the benefit of its population.
PMCID: PMC3616812  PMID: 23514333
Health care; Information science; Library science; Knowledge transfer; Research evidence
Acta Informatica Medica  2012;20(2):113-117.
The aim of the paper is to overview the leading information processing domain in Russia and Eastern Europe, namely All Russian Institute for Scientific and Technical Information (VINITI ) of the Russian Academy of Sciences. Russian science structure is different from that in the Western Europe and the US. The main aim of VINITI is to collect, process and disseminate scientific information on various fields of science and technology, published in 70 countries in 40 languages, selected from books, journals, conference proceedings, and patents. A special attention is given to the journal selection and depositing manuscripts (a kind of grey literature), an important source for Russian research. VINITI has created the largest database containing about 30 million records dating back to 1980. About 80,000-100,000 new records are added monthly. VINITI publishes the Journal Abstract (JA) on 19 fields of science, including medicine, containing about a million publications annually. Two thirds of these records are foreign and 36.7% – Russian sources.
PMCID: PMC3544321  PMID: 23322964
Russian database; VINITI; journal selection; science structure; journal abstract; information service; biomedicine.
9.  Targeted journal curation as a method to improve data currency at the Comparative Toxicogenomics Database 
The Comparative Toxicogenomics Database (CTD) is a public resource that promotes understanding about the effects of environmental chemicals on human health. CTD biocurators read the scientific literature and manually curate a triad of chemical–gene, chemical–disease and gene–disease interactions. Typically, articles for CTD are selected using a chemical-centric approach by querying PubMed to retrieve a corpus containing the chemical of interest. Although this technique ensures adequate coverage of knowledge about the chemical (i.e. data completeness), it does not necessarily reflect the most current state of all toxicological research in the community at large (i.e. data currency). Keeping databases current with the most recent scientific results, as well as providing a rich historical background from legacy articles, is a challenging process. To address this issue of data currency, CTD designed and tested a journal-centric approach of curation to complement our chemical-centric method. We first identified priority journals based on defined criteria. Next, over 7 weeks, three biocurators reviewed 2425 articles from three consecutive years (2009–2011) of three targeted journals. From this corpus, 1252 articles contained relevant data for CTD and 52 752 interactions were manually curated. Here, we describe our journal selection process, two methods of document delivery for the biocurators and the analysis of the resulting curation metrics, including data currency, and both intra-journal and inter-journal comparisons of research topics. Based on our results, we expect that curation by select journals can (i) be easily incorporated into the curation pipeline to complement our chemical-centric approach; (ii) build content more evenly for chemicals, genes and diseases in CTD (rather than biasing data by chemicals-of-interest); (iii) reflect developing areas in environmental health and (iv) improve overall data currency for chemicals, genes and diseases.
Database URL:
PMCID: PMC3515863  PMID: 23221299
10.  Sample size determination for bibliographic retrieval studies 
Research for developing search strategies to retrieve high-quality clinical journal articles from MEDLINE is expensive and time-consuming. The objective of this study was to determine the minimal number of high-quality articles in a journal subset that would need to be hand-searched to update or create new MEDLINE search strategies for treatment, diagnosis, and prognosis studies.
The desired width of the 95% confidence intervals (W) for the lowest sensitivity among existing search strategies was used to calculate the number of high-quality articles needed to reliably update search strategies. New search strategies were derived in journal subsets formed by 2 approaches: random sampling of journals and top journals (having the most high-quality articles). The new strategies were tested in both the original large journal database and in a low-yielding journal (having few high-quality articles) subset.
For treatment studies, if W was 10% or less for the lowest sensitivity among our existing search strategies, a subset of 15 randomly selected journals or 2 top journals were adequate for updating search strategies, based on each approach having at least 99 high-quality articles. The new strategies derived in 15 randomly selected journals or 2 top journals performed well in the original large journal database. Nevertheless, the new search strategies developed using the random sampling approach performed better than those developed using the top journal approach in a low-yielding journal subset. For studies of diagnosis and prognosis, no journal subset had enough high-quality articles to achieve the expected W (10%).
The approach of randomly sampling a small subset of journals that includes sufficient high-quality articles is an efficient way to update or create search strategies for high-quality articles on therapy in MEDLINE. The concentrations of diagnosis and prognosis articles are too low for this approach.
PMCID: PMC2569926  PMID: 18823538
11.  The influence of Iranian scientific journals in disseminating medical information 
Scientific journals are the most credible and updated information resources for valid information in the various fields of science and technology. The present study investigates the status of Iranian scientific journals in disseminating medical information to the world of science.
Materials and Methods:
Total 163 Iranian medical journals accredited by national medical journals commission of Iranian ministry of health and medical education were evaluated through a cross-sectional study. The results were represented in descriptive statistics in the form of table and chart.
The study showed that 89.6% of Iranian medical journals were covered by regional information databases. Web of Science database indexed 22 (13.5%) Iranian journals in the field of medical science. Only six (6.7%) journals were indexed by Medline. Fifty-eight (35.6%) journals were in English, 102 (62.6%) in Persian, and three (1.8%) were bilingual which published their articles both in Persian and English languages. The highest Impact factor belonged to Iranian Journal of Allergy Asthma and Immunology.
Improving scientific credibility of Iranian scholarly journals and their influence in disseminating medical information calls for a precise scientific and executive administration in publishing standards and also in the quality of content.
PMCID: PMC3525037  PMID: 23264793
Bibliographic databases; biomedical research; information dissemination; knowledge management; periodicals
12.  A study on literature obsolescence and core journals’ cost-benefit in citations of the ‘Scientific Medical Journal of Ahwaz’ 
One of the methods of identifying core and popular resources is by citation evaluation. Using citation evaluation, the librarians of the Acquisition Department can use quantitative methods to indentify core and popular resources among numerous information resources and make serious savings in the library's budget, by acquiring these core resources and eliminating useless ones. The aim of this study is assessing literature obsolescence and core journals’ cost-benefit in citations of the ‘Scientific Medical Journal of Ahwaz’.
Materials and Methods:
This study is a descriptive and cross-sectional survey that uses citation analysis. Sampling is objective sampling from all documents from years 1364 (1985) to 1385 (2006), and the population comprises of 6342 citations of the articles published in ‘Scientific Medical Journal of Ahwaz’. Data collection is done through referring to the original documents and the data is analyzed using the Excel software, and for descriptive and analytical statistics the cost-benefit formula and Bradford law formula are used.
Findings showed that the average citation for each document in the ‘Scientific Medical Journal of Ahwaz’ was 15.81. The average citation to international sources was 14.37, and the average citation to national sources was 1.44. The literature obsolescence of Farsi documents in this study was 15 years, while it was equal to 20 years for English documents. The highly cited Farsi journals were (sorted based on citation in descending order): ‘Scientific Medical Journal of Ahwaz’, ‘Daroudarman’, ‘Nabz,’ and ‘Journal of Medical School, Shahid Beheshti University of Medical Sciences’. The highly cited English journals were (sorted based on citation in descending order): ‘Pediatrics’, ‘The New England Journal of Medicine’, ‘Gastroenterology’ and ‘Medicine’. All of these four journals are part of the ISI database and have good impact factors in the Journal Citation Reports (JCR). Also their cost-benefit was reasonable based on the frequency of their use.
The authors of the investigated journal were more inclined to use international references. The resources used by the authors of this journal are relatively obsolete and the authors ought to use more up-to-date resources. The subscription for high citation English and Farsi journals is still available in this university. Also the authors of this journal have used accredited ISI journals as their resource, which is a sign of the credibility for the ‘Scientific Medical Journal of Ahwaz’.
PMCID: PMC4165098  PMID: 25250359
Bradford Law; citation analysis; core journals; cost-benefit; literature obsolescence; Scientific Medical Journal of Ahwaz
Acta Informatica Medica  2012;20(2):72-84.
Most of medical journals now has it’s electronic version, available over public networks. Although there are parallel printed and electronic versions, and one other form need not to be simultaneously published. Electronic version of a journal can be published a few weeks before the printed form and must not has identical content. Electronic form of a journals may have an extension that does not contain a printed form, such as animation, 3D display, etc., or may have available fulltext, mostly in PDF or XML format, or just the contents or a summary. Access to a full text is usually not free and can be achieved only if the institution (library or host) enters into an agreement on access. Many medical journals, however, provide free access for some articles, or after a certain time (after 6 months or a year) to complete content. The search for such journals provide the network archive as High Wire Press, Free Medical It is necessary to allocate PubMed and PubMed Central, the first public digital archives unlimited collect journals of available medical literature, which operates in the system of the National Library of Medicine in Bethesda (USA). There are so called on- line medical journals published only in electronic form. It could be searched over on-line databases. In this paper authors shortly described about 30 data bases and short instructions how to make access and search the published papers in indexed medical journals.
PMCID: PMC3544328  PMID: 23322957
medical journals; on-line databases.
14.  Publication of Original Research in Urologic Journals – A Neglected Orphan? 
PLoS ONE  2012;7(12):e52420.
The pathophysiologic mechanisms behind urologic disease are increasingly being elucidated. The object of this investigation was to evaluate the publication policies of urologic journals during a period of progressively better understanding and management of urologic disease. Based on the ISI Web of Knowledge Journal Citation Reports and the PubMed database, the number and percentage of original experimental, original clinical, review or commentarial articles published between 2002–2010 in six leading urologic journals were analyzed. “British Journal of Urology International”, “European Urology”, “Urologic Oncology-Seminars and Original Investigations” (“Urologic Oncology”), “Urology”, “The Journal of Urology”, and “World Journal of Urology” were chosen, because these journals publish articles in all four categories. The publication policies of the six journals were very heterogeneous during the time period from 2002 to 2010. The percentage of original experimental and original clinical articles, related to all categories, remained the same in “British Journal of Urology International”, “Urologic Oncology”, “Urology” and “The Journal of Urology”. The percentage of experimental reports in “World Journal of Urology” between 2002–2010 significantly increased from 10 to 20%. A distinct elevation in the percentage of commentarial articles accompanied by a reduction of clinical articles became evident in “European Urology” which significantly correlated with a large increase in the journal’s impact factor. No clearly superior policy could be identified with regard to a general increase in the impact factors from all the journals. The publication policy of urologic journals does not expressly reflect the increase in scientific knowledge, which has occurred over the period 2002–2010. One way of increasing the exposure of urologists to research and expand the interface between experimental and clinical research, would be to enlarge the percentage of experimental articles published. There is no indication that such policy would be detrimental to a journal’s impact factor.
PMCID: PMC3526592  PMID: 23285032
15.  Mapping the literature of health care chaplaincy 
This study examined citation patterns and indexing coverage from 2008 to 2010 to determine (1) the core literature of health care chaplaincy and (2) the resources providing optimum coverage for the literature.
Citations from three source journals (2008–2010 inclusive) were collected and analyzed according to the protocol created for the Mapping the Literature of Allied Health Professions Project. An analysis of indexing coverage by five databases was conducted. A secondary analysis of self-citations by source journals was also conducted.
The 3 source journals—Chaplaincy Today, the Journal of Health Care Chaplaincy, and the Journal of Pastoral Care and Counseling—ranked as the top 3 journals in Zone 1 and provided the highest number of most frequently cited articles for health care chaplaincy. Additional journals that appeared in this highly productive zone covered the disciplines of medicine, psychology, nursing, and religion, which were also represented in the Zones 2 and 3 journals. None of the databases provided complete coverage for the core journals; however, MEDLINE provided the most comprehensive coverage for journals in Zones 1 and 2, followed by Academic Search Complete, CINAHL, PsycINFO, and ATLA. Self-citations for the source journals ranged from 9% to 16%.
Health care chaplaincy draws from a diverse body of inter-professional literature. Libraries wishing to provide access to journal literature to support health care chaplaincy at their institutions will be best able to do this by subscribing to databases and journals that cover medical, psychological, nursing, and religion- or spirituality-focused disciplines.
PMCID: PMC3738080  PMID: 23930090
16.  Evaluating adherence to the International Committee of Medical Journal Editors’ policy of mandatory, timely clinical trial registration 
To determine whether two specific criteria in Uniform Requirements for Manuscripts (URM) created by the International Committee of Medical Journal Editors (ICMJE)—namely, including the trial ID registration within manuscripts and timely registration of trials, are being followed.
Materials and methods
Observational study using computerized analysis of publicly available Medline article data and clinical trial registry data. We analyzed a purposive set of five ICMJE founding journals looking at all trial articles published in those journals during 2010–2011, and data from the (CTG) trial registry. We measured adherence to trial ID inclusion policy as the percentage of trial journal articles that contained a valid trial ID within the article (journal-based sample). Adherence to timely registration was measured as the percentage of trials that registered the trial before enrolling the first participant within a 60-day grace period. We also examined timely registration rates by year of all phase II and higher interventional trials in CTG (registry-based sample).
To determine trial ID inclusion, we analyzed 698 clinical trial articles in five journals. A total of 95.8% (661/690) of trial journal articles included the trial ID. In 88.3% the trial-article link is stored within a structured Medline field. To evaluate timely registration, we analyzed trials referenced by 451 articles from the selected five journals. A total of 60% (272/451) of articles were registered in a timely manner with an improving trend for trials initiated in later years (eg, 89% of trials that began in 2008 were registered in a timely manner). In the registry-based sample, the timely registration rates ranged from 56% for trials registered in 2006 to 72% for trials registered in 2011.
Adherence to URM requirements for registration and trial ID inclusion increases the utility of PubMed and links it in an important way to clinical trial repositories. This new integrated knowledge source can facilitate research prioritization, clinical guidelines creation, and precision medicine.
The five selected journals adhere well to the policy of mandatory trial registration and also outperform the registry in adherence to timely registration. ICMJE's URM policy represents a unique international mandate that may be providing a powerful incentive for sponsors and investigators to document clinical trials and trial result publications and thus fulfill important obligations to trial participants and society.
PMCID: PMC3715364  PMID: 23396544
clinical trials as topic/legislation; registries; cross-sectional analysis; Databases; publication policy; trial registration
17.  Some citation-related characteristics of scientific journals published in individual countries 
Scientometrics  2013;97(3):719-741.
Relationships between publication language, impact factors and self-citations of journals published in individual countries, eight from Europe and one from South America (Brazil), are analyzed using bibliometric data from Thomson Reuters JCR Science Edition databases of ISI Web of Knowledge. It was found that: (1) English-language journals, as a rule, have higher impact factors than non-English-language journals, (2) all countries investigated in this study have journals with very high self-citations but the proportion of journals with high self-citations with reference to the total number of journals published in different countries varies enormously, (3) there are relatively high percentages of low self-citations in high subject-category journals published in English as well as non-English journals but national-language journals have higher self-citations than English-language journals, and (4) irrespective of the publication language, journals devoted to very specialized scientific disciplines, such as electrical and electronic engineering, metallurgy, environmental engineering, surgery, general and internal medicine, pharmacology and pharmacy, gynecology, entomology and multidisciplinary engineering, have high self-citations.
PMCID: PMC3826058  PMID: 24311826
Impact factors; Journal self-citations; Journal categories; Journal language
18.  The rate of growth in scientific publication and the decline in coverage provided by Science Citation Index 
Scientometrics  2010;84(3):575-603.
The growth rate of scientific publication has been studied from 1907 to 2007 using available data from a number of literature databases, including Science Citation Index (SCI) and Social Sciences Citation Index (SSCI). Traditional scientific publishing, that is publication in peer-reviewed journals, is still increasing although there are big differences between fields. There are no indications that the growth rate has decreased in the last 50 years. At the same time publication using new channels, for example conference proceedings, open archives and home pages, is growing fast. The growth rate for SCI up to 2007 is smaller than for comparable databases. This means that SCI was covering a decreasing part of the traditional scientific literature. There are also clear indications that the coverage by SCI is especially low in some of the scientific areas with the highest growth rate, including computer science and engineering sciences. The role of conference proceedings, open access archives and publications published on the net is increasing, especially in scientific fields with high growth rates, but this has only partially been reflected in the databases. The new publication channels challenge the use of the big databases in measurements of scientific productivity or output and of the growth rate of science. Because of the declining coverage and this challenge it is problematic that SCI has been used and is used as the dominant source for science indicators based on publication and citation numbers. The limited data available for social sciences show that the growth rate in SSCI was remarkably low and indicate that the coverage by SSCI was declining over time. National Science Indicators from Thomson Reuters is based solely on SCI, SSCI and Arts and Humanities Citation Index (AHCI). Therefore the declining coverage of the citation databases problematizes the use of this source.
PMCID: PMC2909426  PMID: 20700371
Growth rate for science; Growth rate for scientific publication; Databases for scientific publications; Coverage of databases; Coverage of science citation index; Coverage of conference proceedings; Number of scientific journals; Little Science, Big Science; Exponential growth; Doubling time; Cumulative values
19.  Mapping the literature of public health and community nursing 
Objectives: The purpose of this study was to identify the journals most cited in public health and community nursing and to determine which databases provide the most thorough indexing access to these journals. This study is part of the Medical Library Association Nursing and Allied Health Resource Section's project to map the nursing literature.
Methods: Two source journals of public health nursing, Public Health Nursing and Journal of Community Health Nursing, were subjected to citation analysis based on Bradford's Law of Scattering.
Results: A group of 18 titles comprised 34% (1,387) of the 4,100 citations, another third were dispersed among 104 journal titles, with the remaining third scattered across 703 journal titles. The core 18 journals included both of the source journals, 3 major public health journals, and several general medical and nursing journals.
Conclusions: PubMed provided the best overall indexing coverage for the journals, followed by Social Science Citation Index and CINAHL. In terms of source journal coverage, several databases provided complete coverage for the journal Public Health Nursing, while only EMBASE provided complete coverage for the Journal of Community Health Nursing.
PMCID: PMC1773026  PMID: 17252058
Indian Journal of Psychiatry  2000;42(2):203-208.
A previous study found that many papers in the Indian Journal of Psychiatry (UP) had failed to reference relevant papers previously published in the same journal. The present study examined whether any change in referencing patterns had occurred The database comprised 182 eligible articles published in the UP during 1993-1996. In general, few articles cited previous UP papers (median citations, 0-1); however, few articles omitted to cite previous (relevant) UP research (median omissions, 0-1). The average number of articles cited: omitted was 2:1. Original articles cited as well as omitted more UP references than brief communications. The larger the number of total references cited, the larger was the number of UP references both cited and omitted. No significant changes in referencing patterns was evident across the years. Indexing of articles, an important method of identifying relevant, previously published research was grossly adequate in 89% of articles; the average article received 2 index entries. While UP papers appear to be receiving greater attention, it is suggested that room for improvement remains.
PMCID: PMC2957714  PMID: 21407937
Indian Journal of Psychiatry (referencing in); Indian Journal of Psychiatry (indexing of); referencing (patterns in articles); citation (patterns in articles); indexing (of Indian Journal of Psychiatry articles)
21.  The journals of importance to UK clinicians: a questionnaire survey of surgeons 
Peer-reviewed journals are seen as a major vehicle in the transmission of research findings to clinicians. Perspectives on the importance of individual journals vary and the use of impact factors to assess research is criticised. Other surveys of clinicians suggest a few key journals within a specialty, and sub-specialties, are widely read. Journals with high impact factors are not always widely read or perceived as important. In order to determine whether UK surgeons consider peer-reviewed journals to be important information sources and which journals they read and consider important to inform their clinical practice, we conducted a postal questionnaire survey and then compared the findings with those from a survey of US surgeons.
A questionnaire survey sent to 2,660 UK surgeons asked which information sources they considered to be important and which peer-reviewed journals they read, and perceived as important, to inform their clinical practice. Comparisons were made with numbers of UK NHS-funded surgery publications, journal impact factors and other similar surveys.
Peer-reviewed journals were considered to be the second most important information source for UK surgeons. A mode of four journals read was found with academics reading more than non-academics. Two journals, the BMJ and the Annals of the Royal College of Surgeons of England, are prominent across all sub-specialties and others within sub-specialties. The British Journal of Surgery plays a key role within three sub-specialties. UK journals are generally preferred and readership patterns are influenced by membership journals. Some of the journals viewed by surgeons as being most important, for example the Annals of the Royal College of Surgeons of England, do not have high impact factors.
Combining the findings from this study with comparable studies highlights the importance of national journals and of membership journals. Our study also illustrates the complexity of the link between the impact factors of journals and the importance of the journals to clinicians. This analysis potentially provides an additional basis on which to assess the role of different journals, and the published output from research.
PMCID: PMC1559602  PMID: 16762051
22.  Toward an interactive article: integrating journals and biological databases 
BMC Bioinformatics  2011;12:175.
Journal articles and databases are two major modes of communication in the biological sciences, and thus integrating these critical resources is of urgent importance to increase the pace of discovery. Projects focused on bridging the gap between journals and databases have been on the rise over the last five years and have resulted in the development of automated tools that can recognize entities within a document and link those entities to a relevant database. Unfortunately, automated tools cannot resolve ambiguities that arise from one term being used to signify entities that are quite distinct from one another. Instead, resolving these ambiguities requires some manual oversight. Finding the right balance between the speed and portability of automation and the accuracy and flexibility of manual effort is a crucial goal to making text markup a successful venture.
We have established a journal article mark-up pipeline that links GENETICS journal articles and the model organism database (MOD) WormBase. This pipeline uses a lexicon built with entities from the database as a first step. The entity markup pipeline results in links from over nine classes of objects including genes, proteins, alleles, phenotypes and anatomical terms. New entities and ambiguities are discovered and resolved by a database curator through a manual quality control (QC) step, along with help from authors via a web form that is provided to them by the journal. New entities discovered through this pipeline are immediately sent to an appropriate curator at the database. Ambiguous entities that do not automatically resolve to one link are resolved by hand ensuring an accurate link. This pipeline has been extended to other databases, namely Saccharomyces Genome Database (SGD) and FlyBase, and has been implemented in marking up a paper with links to multiple databases.
Our semi-automated pipeline hyperlinks articles published in GENETICS to model organism databases such as WormBase. Our pipeline results in interactive articles that are data rich with high accuracy. The use of a manual quality control step sets this pipeline apart from other hyperlinking tools and results in benefits to authors, journals, readers and databases.
PMCID: PMC3213741  PMID: 21595960
23.  Contributions of Indian conservative dentists and endodontists to the Medline database during 1996–2009: A bibliometric analysis 
Analysis of publication trends will guide the policy framers, administrators, and dentists to frame future policies and design programs for the development of scientific and technological policies in the field of dentistry.
Aims and Objectives:
This study was undertaken to assess the trends in Indian Conservative dentists and endodontists’ Publication in PubMed-Medline database during 1996–2009.
Materials and Methods:
Using the time limitation of publication date limit of 1st January 1996 to 31st December 2009, all articles where authors’ affiliation had the words Dental AND India were selected. From this collection of articles, the following were noted down: year of publication, number of authors, name of the journal, reach of the journal, status of the journal, specialty of the first, state of origin, and type of research. From this database, the performance of department of conservative dentistry and endodontics was analyzed.
The number of articles published by conservative dentists and endodontists was 124. Among them, 63 got published in international journals and 61 in Indian journals. A majority of 33 journals were published in Indian Journal of Dental Research followed by 25 in the Journal of Conservative Dentistry. Out of these articles, 66 were on the basis of original research done by the authors. Nearly 45.2% of the published articles were from the institutes in Tamil Nadu, followed by Karnataka (30.6%), and Maharashtra (8.1%). Although the overall distribution of the publication trends seems to be constant from 1996 to 2006, there seems to be boom in the publication trend since 2007.
PMCID: PMC3010020  PMID: 21217943
Conservative dentists and endodontists in India; conservative dentists and endodontists’ publications; publication trends
24.  Mapping the literature of speech-language pathology. 
The purpose of this study, part of the Medical Library Association (MLA) Nursing and Allied Health Resources Section's project to map the allied health literature, is to identify the core journals in the field of speech-language pathology and to identify indexing and abstracting services that provide access to these journals. Four representative speech-language pathology journals were selected and subjected to citation analysis to determine which journals were cited and how many times each was cited. Bradford's Law of Scattering was applied to the resulting list of journals to identify the core journals of this discipline. Six indexing and abstracting services were selected and scanned to determine coverage for the speech-language pathology core journals. The core journals received broad coverage in the health sciences and social sciences indexing and abstracting databases surveyed, although there was no one database that provided complete coverage of all core journals. The full Current Contents database provides the most extensive coverage of core journals. For individuals without access to the complete Current Contents database, a combined search of both MEDLINE and PsycINFO provides very comprehensive coverage of core journals.
PMCID: PMC226275  PMID: 9285132
25.  How Far Has the International Neurourology Journal Progressed Since Its Transformation Into an English Language Journal? 
The publisher of the International Neurourology Journal changed the text to English in 2010 to promote the journal as an international publication. Four years later, what has happened to this journal? This paper will use citation indicators to describe the degree of internationalization.
Citation indicators such as impact factors, total citations from Web of Science, Science Journal Rankings (SJR), cites per documents (2 years), and Hirsch indexes (h-indexes) from Web of Science, digital object identifier (DOI)/CrossRef, ScimagoJR, or Scopus were calculated. In addition, the native countries of the authors and researchers citing the journal in Web of Science were analyzed.
Impact factors in 2012 and 2013 were 0.645 and 0.857, respectively. Total citations in 2011, 2012, and 2013 from Web of Science were 15, 51, and 99, respectively, and the SJRs in 2011 and 2012 were 0.220 and 0.390, respectively. The h-indexes from DOI/CrossRef, Scopus, and Web of Science were 7, 8, and 6, respectively. Out of 153 unsolicited published papers, 27 (17.6%) were from outside of Korea. The researchers citing the journal in Web of Science and Scopus were primarily from the United States, Korea, China, the United Kingdom, and France. Funding agencies supported 39 of 101 original articles (38.6%).
After changing the text to the English language, the citation indicators show that the International Neurourology Journal has been elevated to an international journal. Although the nationality of authors varies from year to year, the increase in the number of manuscripts from international authors is obvious.
PMCID: PMC3983506  PMID: 24729921
Journal impact factor; Bibliographic database; PubMed

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