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Estimates suggest that more than 250,000 Canadians are infected with hepatitis C virus (HCV), but less than 10% have been treated. Access to specialists in Canada is usually via health care professional (HCP) referral and, therefore, may be a barrier to HCV care. However, clinics that operate in conjunction with the Hepatitis Support Program, Edmonton, Alberta, allow self-referral. It is hypothesized that this improves access to care without increasing inappropriate referrals.
To compare the baseline characteristcs and outcomes of HCV patients who self-referred with those who were HCP-referred.
Data were collected from the Hepatitis Support Program HCV database and chart reviews.
Between December 17, 2002, and December 31, 2007, 1563 patients were referred including 336 self- (21.5%) and 1227 HCP- referrals (78.5%). Self- and HCP-referred patients were similar in terms of age (mean [± SD] 43.0±10.3 years versus 43.9±10.0 years, respectively; P=0.18), sex (56.8% versus 62.0% [men], respectively; P=0.08) and risk factors for HCV (P=0.3), with 49.7% and 52.6%, respectively, identifying injection drug use as the primary risk factor. The two groups had similar HCV genotype distributions and liver biopsy fibrosis scores with similar treatment rates (31.3% versus 33.2%; P=0.6). Treatment outcomes were excellent (sustained virological response 40.2% for genotype 1, 67% for genotypes 2 and 3) in patients completing therapy and were similar between the two groups.
Self-referred patients comprised 21.5% of patients accessing care in the clinic. Self- and HCP-referred patients had similar characteristics, treatment rates and outcomes. Facilitating self- referral to an HCV clinic can improve access to care, including risk reduction education and HCV treatment.
Selon les estimations, plus de 250 000 Canadiens sont infectés par le virus de l’hépatite C (VHC), mais moins de 10 % sont traités. En général, pour accéder à un spécialiste au Canada, il faut obtenir l’aiguillage d’un professionnel de la santé (PDS), ce qui peut constituer un obstacle aux soins du VHC. Cependant, les cliniques qui fonctionnent conjointement avec le programme de soutien de l’hépatite d’Edmonton, en Alberta, autorisent les auto-aiguillages. On postule que cette autorisation améliore l’accès aux soins sans accroître les aiguillages inopportuns.
Comparer les caractéristiques de départ et les issues des patients qui se sont auto-aiguillés à celles des patients aiguillés par un PDS.
Les données ont été colligées dans la base de données du VHC et les dossiers du programme de soutien de l’hépatite.
Du 17 décembre 2002 au 31 décembre 2007, 1 563 patients ont été aiguillés, y compris 336 auto-aiguillages (21,5 %) et 1 227 aiguillages par un PDS (78,5 %). Les patients auto-aiguillés et aiguillés par un PDS étaient similaires pour ce qui est de l’âge (âge moyen [±ÉT] de 43,0±10,3 ans par rapport à 43,9±10,0 ans, respectivement; P=0,18), du sexe (56,8 % par rapport à 62,0 % [hommes], respectivement; P=0,08) et des facteurs de risque du VHC (P=0,3), tandis que 49,7 % et 52,6 %, respectivement, déclaraient les drogues par injection comme facteur de risque primaire. Les deux groupes avaient une répartition génotypique du VHC similaire et des indices de fibrose à la biopsie du foie aux taux de traitement similaires (31,3 % par rapport à 33,2 %; P=0,6). Les issues des traitements étaient excellentes (réponse virologique soutenue de 40,2 % pour le génotype 1 et de 67 % pour les génotypes 2 et 3) chez les patients qui terminaient la thérapie et étaient similaires dans les deux groupes.
Les patients auto-aiguillés représentaient 21,5 % des patients qui accédaient aux soins à la clinique. Les patients auto-aiguillés et aiguillés par un PDS avaient des caractéristiques, des taux de traitement et des issues similaires. Le fait de faciliter les auto-aiguillages vers une clinique du VHC peut améliorer l’accès aux soins, y compris l’éducation sur la réduction des risques et le traitement du VHC.
The prevalence of hepatitis C virus (HCV) infection in Canada is estimated to be 0.8% to 1% (ie, more than 250,000 Canadians) (1). It is estimated that approximately 5000 individuals are newly infected each year. Because this exceeds the annual estimated HCV-related mortality and cure rate of therapy, the prevalence is predicted to rise. Modelling suggests that by 2022, the number of hepatitis C-related deaths and the number of liver transplants needed because of HCV will increase by one-third (2). Despite these startling predictions of future disease burden and the availability of effective HCV therapy, it is estimated that only 65% of HCV-infected Canadians have been identified and of those, less than 10% (approximately 12,000 to 15,000) have been treated for HCV (2). To limit the impact of chronic HCV infection on the Canadian health care system, efforts need to be made to ensure that all patients with HCV infection are identified and have access to care, including appropriate HCV therapy and risk reduction education.
Approximately 20% of HCV infections in Canada are among the immigrant population, and the majority of new HCV infections acquired in Canada are related to injection drug use (2). Access to health care in both of these populations may be less than optimal; consequently, they require physician referral, which is considered to represent a barrier to accessing HCV care. In many jurisdictions, self-referral is inherently discouraged by fee-for-service remuneration of physicians, which typically pays significantly less for nonreferred compared with referred consultations. An alternate remuneration plan that does not rely on a fee-for-service model facilitates the physicians in the Division of Infectious Diseases of the University of Alberta and the Hepatitis Support Program (administered by Alberta Health Services), Edmonton, Alberta, in accepting referrals not only from physicians but also from other health care providers (eg, nurse clinicians, public health professionals) as well as self-referrals. Information and education are provided initially by a nurse who also completes a baseline assessment that includes history, risk factors, physical examination, a standard laboratory panel and abdominal ultrasonography. Once the results of investigations are complete, the patient is seen by a physician for further discussion of management and therapy.
The objectives of the present study were to determine the proportion of patients referred to the Hepatitis Support Program by a health care professional (HCP) (physician or other) and patient self-referral, and to compare the baseline characteristics and outcomes of patients referred by HCPs with those who were self-referred.
Data were extracted from the Hepatitis Support Program database and from chart reviews. All patients referred from December 17, 2002, to December 31, 2007, were included in the analysis with follow-up completed to June 30, 2008. Data collected included the source of referral (self or physician/other HCP), demographics (age, sex), risk factors for HCV infection, qualitative serum HCV RNA, HCV genotype, whether HCV treatment was started and outcome of treatment.
The baseline characteristics and outcomes of treatment were compared between the two groups (self- versus HCP-referred) using χ2, Fisher’s exact and t tests, as appropriate. Data were analyzed using SAS v9.1 (SAS Institute Inc, USA) statistical software. The study was approved by the University of Alberta Health Research Ethics Board.
Between December 17, 2002, and December 31, 2007, a total of 1563 patients were referred to the Hepatitis Support Program (Division of Infectious Diseases). This included 336 individuals who were self-referred (21.5%) and 1227 who were referred by physicians or other HCPs (78.5%). Patients who self-referred were not routinely asked why they contacted the program directly rather than obtaining an HCP referral. However, when recorded, the most commonly stated reasons included lack of a family physician; told by a family physician to call directly; and told by a family physician that there was no treatment for HCV or that their infection was ‘dormant’ but the patient wanted additional information.
The baseline characteristics of subjects who self-referred were similar to those who were HCP-referred and are summarized in Table 1. There were no statistically significant differences between the two groups in terms of age, sex or risk factors for HCV infection. Injection drug use was identified as the primary risk factor in 49.7% of self- and 52.6% of HCP-referred patients (P not significant). Similarly, the proportion of patients who were immigrants from a more highly HCV-endemic country was comparable in the two groups and was the only identifiable risk factor for HCV in 4.8% of self- and 4.2% of HCP-referred patients (P not significant). The proportion who were HCV RNA negative, the proportion who failed to have baseline laboratory results and the distribution of HCV genotypes were also similar between the two groups. A similar proportion of patients in the self- and HCP-referred groups attended the initial nursing assessment (77.4% versus 78.8%, respectively; P=0.6). A total of 950 patients (193 [57.4%] self- and 757 [61.7%] HCP-referred; P=0.2) attended the initial physician appointment.
Among the 950 patients who were assessed by a physician, a total of 326 (34.3%) were treated for HCV, including 66 in the self- and 260 in the HCP-referred group (P=0.5). The proportion undergoing liver biopsy and the METAVIR fibrosis scores (3) were similar in the two groups. Common reasons documented for not treating the patient included mild disease on liver biopsy, active drug or alcohol abuse, patient declined or deferred therapy, and medical comorbidities. Of the 326 patients who commenced therapy, 43 patients (13.2%) were treated in a research protocol and were therefore excluded from further outcome analysis. The proportion of subjects entering research studies was similar in the two groups.
The characteristics and outcomes of the 283 patients treated with standard therapy (pegylated interferon alfa-2a or pegylated interferon alfa-2b combined with ribavirin [4–6]) are summarized in Table 2. With follow-up completed to June 30, 2008, similar proportions in the two groups were documented to have achieved a sustained virological response (SVR). Of the patients started on therapy in the study period, 33 were still on treatment at the end of follow-up, 11 had achieved an end of treatment response and were awaiting assessment of SVR, and seven patients were lost to follow-up.
A total of 232 patients completed therapy as well as HCV RNA testing to document the final virological response (45 self- and 187 HCP-referred). The outcome of therapy in these patients is summarized in Table 3. Overall, an SVR was achieved in 119 patients (51.3%) and was similar in the two groups (57.8% versus 49.7%, respectively; P not significant). When compared by HCV genotype, the proportion acheiving an SVR was also similar in the two groups, with 53 of 132 (40.2%) genotype 1 and 65 of 97 (67%) genotype 2 or 3 patients achieving an SVR.
Allowing self-referral to specialists has been shown to increase access to relevant expert care in HIV-infected individuals in the United States (7). Our data demonstrate that self-referral also increases access to specialist hepatitis C care in Canada. During the five-year study period, 21.5% of our patients were self-referred. In the United States, the inability to self-refer may be a barrier to specialist care because it is linked to the patient’s insurance coverage, whereas in Canada self-referral is hindered by physician remuneration policies that commonly pay more for referred consultations. In our setting, self-referral is facilitated by an alternate remuneration plan that does not rely on a fee-for-service model. Eliminating the financial disincentive to physicians for accepting self-referral in other parts of Canada may improve access to hepatitis C care.
Although the reason for self-referral was not routinely documented, the primary reason recorded was the lack of access to a primary health care provider to initiate the referral. The shortage of family physicians in Canada is increasing for a variety of reasons such as requirements for longer physician training, restrictions on foreign-trained physicians and an increase in the average age and number of physicians retiring (8). Approximately 56% of prevalent HCV cases and almost all new infections acquired in Canada are related to injection drug use, with an estimated 20% occurring among the immigrant community; both groups whose access to primary care may be even less optimal (9) than that of the general population. Providing an option to access hepatitis C care through self-referral – as supported by our data – should increase the ability to provide hepatitis care to the rising number of Canadians without a primary care physician.
Potential drawbacks to allowing self-referral for HCV care may include more ‘inappropriate’ referrals, such as those who are HCV RNA-negative or have absolute contraindications to therapy. This scenario has not been observed in our experience. Patients who self-referred were similar to those who were physician-referred in all baseline characteristics, including the proportion who were HCV RNA-negative, and were equally as likely to be treated and achieve an SVR.
Our data emphasize the need for additional education for primary health care providers and the general public. This is underscored by the fact that 16% of HCP-referred patients were HCV RNA-negative and that a commonly cited reason for self-referral was being told by a primary care provider that their infection was ‘dormant’ or that there was no treatment available. Similar findings were described in a recent survey (10) of members of the New Jersey Academy of Family Physicians, which highlights the insufficient knowledge of family physicians about screening and counselling for chronic hepatitis.
In both HCP- and self-referred groups, approximately one-third of patients were started on HCV therapy, comparable with other large clinical series (11). Also comparable with other clinic experiences (12) and between the two groups was the SVR in our population: 38% to 48% of HCV genotype 1 and 66% to 72% of genotype 2 or 3 fully evaluable patients achieved an SVR. Importantly, the ability to self-refer also provided access to risk reduction education, screening for HIV coinfection and appropriate vaccination against hepatitis A and B.
Given that the prevalence of hepatitis C in Canada is increasing, improving access to hepatitis C care and treatment is a vital component in the strategy to limit the impact of hepatitis C infection on the Canadian health care system. Our data suggest that given the opportunity, patients infected with hepatitis C will access care through a self-referral process, thereby resulting in an appropriate provision of care to a group who may otherwise not have had access.