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J Gen Intern Med. 2008 December; 23(12): 2095–2105.
Published online 2008 October 4. doi:  10.1007/s11606-008-0812-9
PMCID: PMC2596508

Clinical Decision Support Tools for Osteoporosis Disease Management: A Systematic Review of Randomized Controlled Trials

Monika Kastner, PhDcorresponding author1 and Sharon E. Straus, MD, FRCPC2

Abstract

BACKGROUND

Studies indicate a gap between evidence and clinical practice in osteoporosis management. Tools that facilitate clinical decision making at the point of care are promising strategies for closing these practice gaps.

OBJECTIVE

To systematically review the literature to identify and describe the effectiveness of tools that support clinical decision making in osteoporosis disease management.

DATA SOURCES

Medline, EMBASE, CINAHL, and EBM Reviews (CDSR, DARE, CCTR, and ACP J Club), and contact with experts in the field.

REVIEW METHODS

Randomized controlled trials (RCTs) in any language from 1966 to July 2006 investigating disease management interventions in patients at risk for osteoporosis. Outcomes included fractures and bone mineral density (BMD) testing. Two investigators independently assessed articles for relevance and study quality, and extracted data using standardized forms.

RESULTS

Of 1,246 citations that were screened for relevance, 13 RCTs met the inclusion criteria. Reported study quality was generally poor. Meta-analysis was not done because of methodological and clinical heterogeneity; 77% of studies included a reminder or education as a component of their intervention. Three studies of reminders plus education targeted to physicians and patients showed increased BMD testing (RR range 1.43 to 8.67) and osteoporosis medication use (RR range 1.60 to 8.67). A physician reminder plus a patient risk assessment strategy found reduced fractures [RR 0.58, 95% confidence interval (CI) 0.37 to 0.90] and increased osteoporosis therapy (RR 2.44, CI 1.43 to 4.17).

CONCLUSION

Multi-component tools that are targeted to physicians and patients may be effective for supporting clinical decision making in osteoporosis disease management.

Electronic supplementary material

The online version of this article (doi:10.1007/s11606-008-0812-9) contains supplementary material, which is available to authorized users.

Key Words: osteoporosis, disease management, decision making, randomized controlled trials

INTRODUCTION

Osteoporosis affects over 200 million people worldwide1, with an estimated 10 million people in the US2, 4 million people in the UK3, and 1.4 million people in Canada2,4. A first fragility fracture increases the risk of serious fractures of the hip and spine 20-fold 5. Vertebral fractures can cause pain, height loss, deformity, disability, and mortality6, but hip fractures have the most devastating prognosis7, with loss of physical function and social interaction, and need for long-term care8. The cost of treating osteoporosis and the fractures it can cause911 is compounded by the increasing number of people at risk in our aging population4,12.

There is evidence from clinical practice guidelines outlining how osteoporosis can be diagnosed and managed1315. However, there is a gap between evidence and clinical practice16. Indeed, fewer than 40% of patients with this disorder receive appropriate therapy16. Many clinicians are uncertain about screening and management of osteoporosis17. The proportion of patients with fragility fractures who receive a diagnostic test for osteoporosis or a diagnosis from a physician is not optimal (range 1.7–50%)18. This gap highlights the need for effective knowledge translation and the finding that the provision of evidence is necessary but not sufficient to achieve knowledge translation19.

We systematically reviewed the literature to identify studies evaluating the effectiveness of tools that support clinical decision making in osteoporosis disease management for reducing fragility fractures and increasing bone mineral density (BMD) testing or osteoporosis therapy.

METHODS

Data Sources

Studies were identified by searching Medline (1966 to July 2006), EMBASE (1980 to 2006), CINAHL (1982 to July 2006), and Ovid EBM Reviews (Cochrane Database of Systematic Reviews, ACP Journal Club, Database of Abstracts of Reviews of Effects, and the Cochrane Clinical Controlled Trials Register). We also searched the grey literature: web sites of CIHR (Canadian Institutes of Health Research), US AHRQ (Agency for Healthcare Research and Quality), US CRISP (Computer Retrieval of Information on Scientific Projects), the US National Institutes of Health clinical trials register (ClinicalTrials.gov), bmjupdates+, Canadian Centre for Chronic Disease Prevention and Control, Osteoporosis Canada, and Digital Dissertations. We reviewed the reference lists of relevant articles, hand searched the current Canadian clinical practice guidelines for the diagnosis and management of osteoporosis13, and contacted experts in the field.

Search Strategy

To generate search terms, we conducted a preliminary search in Medline and EMBASE using known terms and synonyms suggested by clinicians, librarians, and experts in the field to capture all possible text words and MeSH terms that describe disease management, disease management tools, and clinical decision support systems (CDSSs). This list was supplemented by additional terms that were found in studies evaluating tools in other chronic diseases such as heart failure, diabetes, and asthma2024. The final list of terms included clinical decision support systems/techniques/tools; disease management/tools; clinical decision aids/tools/guidelines, computer assisted; decision rules/trees/prediction guides; reminder systems; risk assessment instruments/tools; point of care system. We defined reminders as any system of communication that suggests, recommends, notifies, prompts, or alerts clinicians, other health-care professionals, or patients about osteoporosis risk, diagnosis, or treatment according to practice guidelines. We defined risk assessment as any strategy that assesses the risk for osteoporosis using measures of BMD [e.g., dual-energy x-ray absorptiometry (DXA) or quantitative ultrasound (QUS)], any risk assessment questionnaires such as the osteoporosis risk-assessment instrument (ORAI)25, or any other well-defined strategy. Using Ovid, the search terms were first combined using the Boolean “OR,” and the resulting sets were then “AND-ed” with “osteoporosis” in each database. The resulting retrieval yield was then limited using the most sensitive search strategy filter for treatment studies developed by Haynes et al.26.

Study Selection

Studies were included if they were randomized controlled trials (RCTs) in any language from 1966 to July 2006 and evaluated disease management or CDSS interventions in men or women at risk for osteoporosis (age ≥65 years of age, postmenopausal women, or >3 months systematic use of glucocorticoids) who had a confirmed diagnosis of osteoporosis or an existing or previous fragility fracture. Interventions could be in any format (e.g., electronic-, paper-, or program-based) as long as they incorporated an aspect of care coordination, were targeted to patients or health-care professionals involved in osteoporosis care, the intervention was characterized by at least one term that met our definitions for disease management or CDSS tools, evaluated any component of disease management (i.e., risk assessment, diagnosis, or treatment), and investigated living patients. Outcomes were fragility fractures (vertebral or nonvertebral), BMD investigations, initiation of any osteoporosis treatment (e.g. bisphosphonates), and fracture-related complications [e.g., quality of life (QOL), admission to long-term care, and fracture-related mortality]. We excluded studies evaluating pharmacological interventions for osteoporosis (e.g., bisphosphonates) unless they were a component of the osteoporosis tool, and studies investigating outcomes related to fractures from major trauma, the primary prevention of osteoporosis, and falls prevention.

Two investigators (MK and SS) independently reviewed the titles and abstracts of potentially relevant articles and applied the inclusion/exclusion criteria using a standardized form. The final list of articles was selected by the same two investigators who independently screened articles in full text using the inclusion/exclusion criteria. The agreement between the two reviewers for abstract review was excellent (κ = 0.91, 95% CI 0.80 to 1.00) and perfect for full-text review. Any disagreements were resolved through consensus.

Data Extraction and Quality Assessment

We assessed study quality using specific methodological criteria most relevant to the control of bias: randomization, allocation concealment, blinding, and completeness of follow-up. Authors were contacted to verify the accuracy of reporting of these criteria in their studies — we received verification from the authors of six studies (46%)31,34,35,4042. We decided not to use a quality assessment scale because evidence exists that they lack empirically supported components27, and authors of scales can be influenced by their own perception of study quality28. The two authors (MK and SS) independently extracted data on the setting (location, enrollment dates), study design (method of randomization, allocation concealment, and blinding), population characteristics (inclusion/exclusion criteria, sample size, number of patients assessed for eligibility and the number who met inclusion criteria), interventions (components, format, aspect of osteoporosis disease management evaluated, and the target of the intervention), outcomes, results, and follow-up [duration of follow-up, intention to treat (ITT) analysis, withdrawals, and reasons for dropouts].

Data Synthesis and Analysis

We explored the potential sources of methodological and clinical heterogeneity according to differences in study quality, participants, interventions, and outcomes. Using the more conservative random effects model to account for extra between-trial variation29, relative risks (RRs) with their 95% confidence intervals (CIs) were calculated from event rates using Cochrane Review Manager 4.2.8. Authors of included studies were contacted to verify calculations, and we received verification from authors of six studies (46%)31,34,35,4042.

RESULTS

Our search identified 39,953 potentially relevant citations, and none were identified from the grey literature. Using the most sensitive search filter by Haynes et al. for treatment studies26, this retrieval yield was then limited to 3,880 RCTs. Of these, 1,246 citations were screened for relevance, 42 articles were selected for full-text review, and 13 RCTs met the inclusion/exclusion criteria and were included in the systematic review3042 (Fig. 1). Reasons for exclusion were that the study did not meet criteria for target intervention (21 studies)43,4546,4850,52,53,5558,6065,6769, outcomes (7 studies)44,47,59,61,6567, population (4 studies)44,54,64,70, or study design (3 studies)51, 53, 60.

Figure 1
Study identification flowchart.

Sources of Heterogeneity

Meta-analysis was not done because studies were too heterogeneous to pool. Sources of methodological heterogeneity are shown in Tables 1 and and2.2. Reported study quality was generally poor—only four studies indicated all of sequence generation, concealment of randomization, blinding (Table 1)31,3335, the inclusion of at least 80% of patients in the analysis, and a description of reasons for dropouts/withdrawals (Table 2)31,3335. The follow-up period ranged between 2 and 28 months, and only four studies were analyzed according to ITT (Table 2)31,33,40,42.

Table 1
Study Quality Assessment – Randomization and Blinding
Table 2
Study Quality Assessment – Completeness of Follow-Up

Table 3 shows the clinical heterogeneity across studies according to population and interventions, which also contributed to our decision not to combine results in a meta-analysis. Populations varied across studies for osteoporosis risk factors: age ≥65 years of age (six studies)30, 33, 35, 36, 41, 42, postmenopausal women (3 studies)34, 38, 39, previous fracture (six studies), and at least 6 months use of glucocorticoids (five studies)4042. Differences were also found between studies for the components of interventions (i.e., different combinations of reminders, risk assessment, or education); format of the reminders (paper-based or electronic), and risk assessment [BMD testing or questionnaires, such as the SCORE (Simple Calculated Osteoporosis Risk Estimate) and SOF (Study of Osteoporotic Fracture)], and the target of the intervention: physicians (two studies)30, 40, patients (three studies)31, 33, 39, or both (six studies)32, 34, 35, 36, 37, 38, or physicians, patients, and pharmacists (two studies)37, 42. Seven studies (54%) incorporated all three aspects of osteoporosis disease management in their intervention30, 32, 34, 36, 38, 41, 42. Twelve of the 13 RCTs (92%) investigated outcomes related to BMD testing or initiation of osteoporosis therapy (e.g., bisphosphonates, and calcium and vitamin D)3032, 3442; and only two studies investigated outcomes of fracture or QOL30, 39.

Table 3
Characteristics of Included Studies*

Eleven of the 13 studies (85%) included a reminder system or education as a component of their intervention3032, 3438, 4042. Of these, three studies included a reminder with or without a risk assessment strategy (Table 4)3032, and 8 studies included a reminder system plus education with or without a risk assessment strategy (Table 5)3438, 4042. Two studies investigated interventions that included education with exercise or risk assessment (Table 6)33, 39. We also summarized how the grouping of different baseline risk factors by intervention might impact on the interpretation of its effectiveness (Tables 7, 8, 9, 10 and 11; available as a web appendix).

Table 4
Reminder With or Without Risk Assessment*
Table 5
Reminder Plus Education With or Without Risk Assessment*
Table 6
Education With Exercise or Risk Assessment*

Reminder With or Without Risk Assessment (Table 4; three studies)3032

The study by Barr et al. targeted the reminder component of the intervention to physicians, which recommended calcium and vitamin D for patients at increased risk for hip fracture following osteoporosis screening. Results showed that fewer patients who received the intervention had a fracture at any site than those in the control group (RR 0.58, CI 0.37 to 0.90), and more patients received any osteoporosis medication (RR 2.44, CI 1.43 to 4.17)30. The second study targeted the reminder to patients with previous fracture who were prompted to follow up with their physician about their increased risk for osteoporosis. The intervention group was investigated more for osteoporosis than the control group (RR 5.70, CI 2.33 to 13.91), but no difference was found between groups for antiresorptive (RR 0.76, CI 0.21 to 2.72) or vitamin D use (RR 3.80, CI 0.43 to 33.21)31. In the third study, which targeted a reminder strategy to physicians and patients, no difference was found between groups for BMD testing (RR 1.23, CI 0.80 to 1.91) or initiation of osteoporosis therapy (RR 0.70, CI 0.34 to 1.47)32.

Reminder Plus Education With or Without Risk Assessment (Table 5; eight studies)3438, 4042

Six RCTs included a reminder plus education as part of the intervention. Of these, three studies that showed an improvement in outcomes targeted the reminder component of the intervention to both physicians and patients3435, 42. The study by Feldstein et al. compared usual care with an EMR reminder to alert physicians of their patients at risk for osteoporosis and the need for evaluation and treatment plus a letter to patients to discuss management options with their physician. The intervention increased BMD testing (RR 8.67, CI 3.90 to 19.26) or the initiation of osteoporosis medication (RR 7.26, CI 3.24 to 16.24)34. Another study provided fracture patients with a 15-minute visit prior to discharge about fracture prevention and current therapies plus a printed copy of five questions to discuss with their physician35. This study showed that the intervention group had osteoporosis addressed more than in the control group (RR 2.14, CI 1.00 to 4.62)35. The third study by Solomon et al. targeted all components of the intervention to physicians, patients, and pharmacists42. The intervention consisted of a continuing medical education program delivered by a pharmacist educator trained in osteoporosis and included a summary of osteoporosis, an algorithm for osteoporosis diagnosis and treatment, and a guide to pharmacotherapy. Another component of the intervention involved an automated telephone call inviting patients to have a BMD test, which they could schedule immediately after the call42. Results showed that compared with controls, the multi-faceted intervention increased BMD testing (RR 1.43, CI 1.11 to 1.86) and osteoporosis medication use (RR 1.60, CI 1.07 to 2.41)42.

Three studies targeted reminders and education to physicians and patients at risk for glucocorticoid-induced osteoporosis37, 4041. None of these studies found a difference between groups for BMD testing (RR range 0.84 to 1.14)37, 4041, bisphosphonate therapy (RR 2.49, 0.63 to 9.87)37, or calcium intake (RR range 0.98 to 1.77)37, 41.

Two studies combined a reminder with education plus a risk assessment strategy36, 38. Of these, LaCroix et al. targeted reminders to both physicians and patients, and found that more patients received any osteoporosis therapy than controls (RR 1.27, CI 1.03 to 1.56), but found no difference between groups for any fracture (0.96, CI 0.69 to 1.34)36. The second study showed increased rates of prescription for bisphosphonates from baseline in all groups (50% increase, p < 0.001), but the groups did not differ38.

Education With Exercise or Risk Assessment (Table 6: two studies)33, 39

Devereux et al. investigated a patient education intervention within a self-assessment program combined with aquatic exercise in patients ≥65 years of age with osteoporosis or osteopenia, and found greater improvement than controls in QOL (difference between groups in mean change from baseline 8.6, CI 0.4 to 16.8; 12.0, CI 2.3 to 21.8; 14.1, CI 0.6 to 27.7; 10.2, CI 2.0 to 18.4, respectively)33. Rolnick et al. evaluated an intervention that combined patient education with a risk assessment strategy (the SCORE questionnaire and BMD testing) in a population of postmenopausal women and showed no difference between groups for initiating calcium or vitamin D (RR 1.02, CI 0.88 to 1.17)39.

DISCUSSION

This systematic review suggests that some tools that support clinical decision making in osteoporosis disease management may reduce fracture rates, and increase BMD investigations and the initiation of osteoporosis therapy. In particular, interventions that target both physicians and patients, and those that consist of multiple components such as reminders and education were associated with greater improvement in outcomes than single-target interventions with fewer components. Five of the six studies (83%) that showed significant improvement in outcomes were targeted to both physicians and patients30, 34, 35, 42, 36. Furthermore, 6 of the 11 studies (55%) that incorporated a reminder30, 31, 3436, 42 and 5 of the 10 studies (50%) that included education3336, 42 as part of the intervention showed improvement in outcomes. These results are not surprising, as they confirm the multidisciplinary nature of osteoporosis disease management. It also suggests the need to consider multiple components and targets in the development of any future interventions.

Although several studies did show improved outcomes, these results have to be interpreted with caution for several reasons. First, very few RCTs evaluate osteoporosis disease management tools that support clinical decision making. Second, quality assessments of the 13 included studies indicated that trial reporting was not optimal. The lack of reporting of appropriately used methods of randomization and its concealment, blinding, and follow-up in the studies largely limits the internal validity of their findings. The four studies that were found to be the most methodologically rigorous (i.e., indicated randomization and concealment, blinding, follow-up, and at least 80% included in the analysis)31,3335 were among the six studies that showed improved outcomes. Third, it was not possible to combine the results in a meta-analysis because the studies were too heterogeneous to pool. Differences between studies for study quality and interventions were the main sources of variability. Generalizability of the interventions is also limited because only half of the studies included all three components of osteoporosis disease management as part of their intervention, and studies varied substantially for the components and targets of the interventions.

To reduce the effects of bias, we ensured that a rigorous methodology was used for our systematic review by limiting our selection of studies to RCTs71, conducting a comprehensive literature search with well-defined terms and inclusion/exclusion criteria, screening articles independently at each level of article selection using standardized data abstraction forms, and measuring inter-rater reliability using kappa statistics. We also addressed potential sources of variability between relevant studies (in addition to random error) by the rigorous study quality assessment and differences between studies for populations, interventions, and outcomes.

Of the disease management tools that we found in our systematic review, about half addressed all dimensions of osteoporosis disease management, and few utilized a computerized format that could be used by health-care professionals at the point of care. This gap highlights an area of future work since evidence has shown that CDSSs can facilitate disease management24; provide and automatically generate evidence-based recommendations for the screening, diagnosis, or treatment of specific patients; improve the clarity of guidelines; send reminders; and provide accessible references72, 73. CDSSs can also investigate outcomes related to improving practitioner performance and look at clinically meaningful patient outcomes74, 75. Furthermore, there is evidence from studies in other chronic diseases2024 that integration of electronic technology into such systems can facilitate disease management and positively impact patient outcomes.

In summary, interventions that incorporate reminders and education, and those that target both physicians and patients are promising strategies for improving outcomes in osteoporosis disease management. The low number of studies found in this systematic review highlights the gaps that currently exist for optimal disease management in osteoporosis for reducing fractures, performing BMD investigations, and initiating osteoporosis treatment. The lack of rigorously evaluated interventions suggests the need for the development and evaluation of comprehensive tools to bridge the gap between evidence and practice.

ELECTRONIC SUPPLEMENTARY MATERIAL

Below is the link to the electronic supplementary material.

Web Appendix(139K, doc)

(DOC 141 kb)

Acknowledgments

Source of Funding We received no external support for this study.

Footnotes

Electronic supplementary material

The online version of this article (doi:10.1007/s11606-008-0812-9) contains supplementary material, which is available to authorized users.

An erratum to this article can be found at http://dx.doi.org/10.1007/s11606-008-0871-y

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