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Research ArticleResearch

Boundaries and overlap

Community medicine or public health doctors and primary care physicians

Margaret L. Russell and Lynn McIntyre
Canadian Family Physician November 2009; 55 (11) 1102-1103.e5;
Margaret L. Russell
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  • For correspondence: mlrussel@ucalgary.ca
Lynn McIntyre
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ABSTRACT

OBJECTIVE To explore the boundaries and overlap of practice profiles of primary care physicians (PCPs), including FPs and GPs, and community medicine specialists (CMs), particularly in the area of community-oriented clinical care.

DESIGN Analysis of data from the 2004 National Physician Survey. Analyses included frequencies, cross-tabulations, and χ2 statistics.

SETTING Canada.

PARTICIPANTS Primary care physicians and CMs who responded to the 2004 National Physician Survey.

MAIN OUTCOME MEASURES For PCPs and CMs, we compared main work and patient care settings, areas of professional activity, and credentials to practise public health or family medicine. Among CMs, we examined the most commonly treated conditions and services provided for evidence of community-oriented clinical care.

RESULTS Data were available for 154 CMs and 11 041 PCPs. The most common work setting for CMs was government or public health agencies, while for PCPs it was offices, clinics, or community care settings, including community hospitals. Among CMs, 59.7% indicated that community medicine or public health practice was an area of professional activity and 13.0% indicated that they participated in primary care. The corresponding proportions for PCPs were 15.3% and 78.2%, respectively. Generally, CMs engaged in a mixture of individual-level and population-level practice activities, although the former was not distinguished by increased clinical prevention, health promotion, or disease prevention services. Of CMs who indicated that primary care was an area of professional activity, 55.0% had the relevant credentials, compared with only 1.9% of PCPs who conversely indicated that community medicine or public health was an area of professional activity.

CONCLUSION In Canada CMs and PCPs have distinct practice profiles, despite some overlaps. Further role and practice profile refinement for both physician groups has implications for training, credentialing, and deployment within the health care system.

The specialty of community medicine prepares doctors to practise public health medicine; however, it also includes a career path of “community-oriented clinical practice.”1 What community-oriented clinical practice looks like, or how it differs from more population-oriented public health practice or from primary care, has not been examined. Using data from the 2004 National Physician Survey (NPS) and the Canadian Medical Association (CMA) Masterfile codings for community medicine/public health and for family physician/general practitioner, we described the practice profiles of Canadian community medicine specialists (CMs) and compared them to those of primary care physicians (PCPs).

METHODS

The NPS is a collaborative effort of the College of Family Physicians of Canada, the CMA, and the Royal College of Physicians and Surgeons of Canada. Detailed information on the 2004 NPS, including survey methodologies and questionnaires, is available on the NPS website.2 In 2004, the national response rate was 35.9%; however, respondents were very similar to both the general physician population and to nonrespondents.3 Data from the survey have been widely used to describe physician practice profiles.4–6

The 2004 NPS used a core set of common questions for both specialists and non-specialists, including questions (checklists) about main work and patient care settings and populations served. Respondents were asked to indicate all areas of professional activity on checklists that included items relevant to primary care and public health. The questionnaires also inquired about certifications and nonmedical degrees (open-ended questions). Unique to the specialist questionnaire were 2 open-ended questions: “What are the five most common conditions you treat?” and “Excluding consultations, what are the five most common services you provide?”

Data analysis

Content analysis was performed for text data. Other analyses included unweighted frequencies and cross-tabulations; χ2 tests were used to explore for significant differences at an α level of 0.05 when comparing physician groups or practice differences within physician groups in cross-tabulations. Where cell size numbers warranted, data were suppressed in accordance with disclosure restriction rules (minimum n in a group or cohort of 30; minimum cell size of 5).

Ethics approval

The study was approved by the Conjoint Health Research Ethics Board of the University of Calgary in Alberta and the Technical Advisory Committee of the NPS.

RESULTS

We obtained data on the 11 195 CMs and PCPs who responded to the 2004 NPS (154 CMs, 11 041 PCPs). These physicians represented an estimated total of 382 CMs and 30 903 PCPs in Canada.7 The practice profiles of CMs and PCPs were examined by setting, professional activity, and population, cross-referenced with credentials. Because the questions were oriented to individual patient care, many CMs indicated that such questions were not applicable or did not respond.

Main work and patient care settings

For CMs, the most frequently identified main work setting— the setting where the most time was spent—was government or public health agencies, while for PCPs it was private offices, clinics, or community care settings, including community hospitals (Table 1). Government or public health agencies were identified as the main work setting by 39.6% of CMs but by less than 1% of PCPs. Nearly half the CMs (47.4%) indicated that the question about main patient care setting did not apply to them, in contrast to only 2.4% of the PCPs. A main patient care setting of private offices, clinics, or community care settings, including community hospitals, was listed by 24.7% of CMs and 86.7% of PCPs (data not shown).

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Table 1

Main work settings for CMs and PCPs

Areas of professional activity

Areas of professional activity identified by participants were ranked according to the frequency with which they were identified (Table 2). There was only 1 area of professional activity that ranked in the top 10 for both CMs and PCPs: primary care was the fifth most frequently identified area of professional practice for CMs and the most frequently identified area of professional practice for PCPs. Administration was ranked third for CMs and 14th for PCPs. Community medicine or public health ranked first for CMs but 24th for PCPs (selected by 15.3% of PCPs). Concurrent practice activities in both community medicine and primary care were unique to CMs (9.1%). Of the other areas of professional activity included in the top 10 ranking for CMs that were also included on the PCP checklist, international medicine ranked eighth for CMs and 32nd for PCPs; infectious diseases ranked ninth for CMs and 19th for PCPs; and travel or tropical medicine tied for ninth for CMs and ranked 28th for PCPs. Medical education (teaching, research) ranked second for CMs and was represented by 2 different items in the PCPs checklist: “teaching,” which ranked 18th, and “research,” which ranked 31st.

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Table 2

Areas of professional activity most commonly selected by CMs and PCPs

Populations served

Among CMs, 12.3% (vs 1.5% of PCPs) could not identify a geographically characterized (eg, rural or urban) primary population served, although an additional 35.1% (vs 3.9% of PCPs) did not respond to the question. Respondents were asked to identify populations that represented 10% or more of their practices; 64.3% of CMs and 47.1% of PCPs did not answer the question. There was only one difference (of borderline significance) between the practice populations of CMs and PCPs who did provide answers to the question: 2.6% of CMs compared with 1.3% of PCPs had practices in which persons with HIV or AIDS comprised more than 10% of the practice population (P = .05).

Common treatments and services

The 2004 NPS did not collect sufficiently detailed data from PCPs to permit a direct comparison with CMs of the most commonly treated health conditions or the most commonly provided services. Still, the examination of the responses to these questions by CMs might inform the practice profile of community-oriented clinical care.

Only 70 of 154 (45.5%) CMs provided information on the conditions they treated most often. For these respondents (Table 3), responses suggested both programmatic-and population-based categories, such as public health, and individual patient care categories (eg, symptoms and ill-defined conditions). Some categories (eg, respiratory conditions, psychiatric conditions, hypertension) might represent either or both situations. We explored the data for conditions that distinguished between CMs who did or did not indicate that family medicine, general practice, or primary care was an area of professional activity. Four conditions significantly associated with higher levels of patient care versus population-level practice were identified: hypertension (60% vs 14%, P = .0003), respiratory conditions (50% vs 18% P = .015), chronic diseases (50% vs 14%, P = .004), and symptoms and ill-defined conditions (50% vs 20%, P = .03).

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Table 3

Conditions most commonly treated by CMs: 70 of 154 (45.5%) CMs provided responses; more than 1 category of response was permitted.

Of 154 CMs, 72 (46.8%) supplied information on the services they provided most often; more than 1 category of response was permitted. Five broad categories emerged from the analysis of these text data: direct patient care; public health; academic work; providing consultations to health care workers and to governments or agencies; and occupational health. These service categories confirmed that there was a mixture of individual-level and population-level responses from the CMs. Direct patient care and public health services emerged with similar frequency (Table 4). Community medicine physicians who indicated that primary care was an area of professional activity were more likely to list direct patient care as one of their most commonly provided services (88.2% vs 49.1%; P = .01). This was the sole service that was associated with indicating primary care as an area of professional activity.

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Table 4

Services most commonly provided by CMs: 72 of 154 (46.8%) CMs provided responses; more than 1 category of response was permitted.

Credentials

For practising primary care

Of the 154 CMs, 48 (31.2%) held concurrent Certification in Family Medicine from the College of Family Physicians of Canada (CCFP). Of the 20 CMs who identified primary care as an area of professional activity, 11 (55.0%) held the CCFP designation. Primary care was identified as an area of professional activity for a significantly larger proportion of CMs (22.9%) who held CCFP designations than for those who did not (8.4%, P = .03). Among the 11 041 PCPs, 6056 (54.9%) held the CCFP designation. As was observed for CMs, a larger proportion of those PCPs with the CCFP designation (81.8%) than those without (74.0%) indicated that primary care was an area of professional activity (P < .0001).

For practising community medicine or public health

Of the 154 doctors classified as CMs by the CMA Masterfile, 75 (48.7%) reported that they held Certification in Community Medicine from the Royal College of Physicians and Surgeons of Canada, and 100 (64.9%) reported that they were certified in community medicine or public health or held a core public health degree such as a Masters of Public Health.8 All CMs who indicated that community medicine or public health was an area of professional activity had one of these credentials. In contrast, of 11 041 PCPs only 112 (1.0%) held public health credentials. A larger proportion of those PCPs with such credentials (32 of 112; 28.6%) than of those without such credentials (1661 of 10 929; 15.2%) indicated that public health was an area of professional activity (P < .001).

DISCUSSION

Little is known of the actual practices of Canada’s public health doctors. The NPS is limited in this regard because CMs, unlike PCPs, had difficulty responding to survey items on main patient care settings, populations served, and health conditions seen and treated. We posit that CMs likely perceived questionnaire items to be related to direct patient care and not population-level practice. Among those who responded to these items, we discerned a mixed practice profile, which included elements of both individual-level and population-level health care. For example, while CMs most commonly indicated their main work setting to be government or public health agencies, nearly 1 in 7 identified private offices, clinics, or community care settings as their main work setting, a choice that was also the most common patient care setting.

A picture of mixed practice is further substantiated when areas of professional activity are considered. Primary care was among the 5 most frequently identified areas of professional practice for CMs and was the only area of professional practice of the top 10 that CMs had in common with PCPs. About 9% (14 of 154 CM respondents) of CMs explicitly indicated concurrent practice in both community or public health medicine and primary care. The most commonly treated conditions and services provided by CMs are again suggestive of a mixture of both programmatic- or population-based practice and individual patient care categories.

Given CMs’ participation in primary care, did their practice profile conform to the Royal College of Physicians and Surgeons of Canada’s career path for CMs of “community-oriented clinical practice with an emphasis on health promotion and disease prevention” 1? Such a practice profile should include clinical prevention,9–11 individual-level public health interventions, or—given the specialty’s social justice mandate— the care of vulnerable populations. There was only 1 vulnerable population (persons with HIV or AIDS) that CMs were more likely than PCPs to treat, although this difference was of borderline significance, and we did not find an association between identifying primary care as an area of professional activity for CMs and treating the health conditions classified as part of clinical prevention or public health. Based on the health conditions most commonly treated (ie, hypertension, symptoms and ill-defined conditions), it does not appear that those CMs who engaged in family practice, general practice, or primary care as an area of professional activity had a particular focus on health promotion and disease prevention. If such were the case, one might have anticipated that clinical prevention and perhaps women’s health would be associated with participation in this area of professional activity.

Limitations

Based only on the NPS, our measurements are blunt; it is possible that an in-depth study that used chart reviews or qualitative interviews focusing on this area might be illuminating. We might find one or more of the following: a true finding of a mixed practice pattern; a difference in the conceptualization of clinical prevention or public health by population-versus individual-level interventions between CMs who did or did not indicate that family practice, general practice, or primary care was an area of professional activity; or a primary care system that cannot support a health promotion and disease prevention practice emphasis.

Primary care has been defined as “the provision of integrated, accessible health care services by clinicians who are accountable for addressing a large majority of personal health care needs, developing a sustained partnership with patients, and practicing in the context of family and community”12; family medicine has been defined as “the medical specialty which provides continuing, comprehensive health care for the individual and family.”13 The 2004 NPS did not capture data in sufficient detail to permit mapping of these definitions for CMs or for PCPs, except insofar as respondents might have had these definitions in mind when they indicated that their practices included family medicine, general practice, or primary care. Nor could the NPS tell us about the community medicine or public heath practices of PCPs.

Conclusion

There is ongoing interest in the boundaries and overlap of CMs and PCPs in Canada. In March 2008, a 1-day symposium took place in Toronto, Ont, to examine the competency interface between family medicine and community medicine residency programs. The symposium examined the desired public health competencies of family medicine and the desired primary care competencies of community medicine residents upon graduation (Bart Harvey, MDPhD, MEd, written communication; July 4, 2008). The symposium raised perhaps more questions than it answered, but it noted that the relative size of the family medicine programs compared with the community medicine programs posed particular challenges to providing joint educational opportunities. This might be even more of challenge in practice, considering our study indicated a ratio of PCPs to CMs of 72:1. Given that Canada is experiencing perceived shortages of both public health doctors and PCPs, we believe there is a need to clarify the roles of both CMs and of PCPs in the provision of health care. This would have implications for training, credentialing, and scope of practice.

Acknowledgment

This study was supported by a financial contribution from the Public Health Agency of Canada. The views expressed herein do not necessarily represent the views of the Public Health Agency of Canada. The study described in this paper was conducted using original data collected for the College of Family Physicians of Canada (CFPC), the Canadian Medical Association (CMA), and the Royal College of Physicians and Surgeons of Canada’s (RCPSC) 2004 National Physician Survey (NPS) database. The NPS was also supported by the Canadian Institute for Health Information and Health Canada. The NPS and all of the data contained in the NPS database are the copyright-protected works of the CFPC, CMA, and RCPSC and cannot be copied or reproduced in whole or in part without permission of the CFPC, CMA, and RCPSC. We thank Sarah Scott at the CFPC for her support with data analysis. The views expressed herein do not necessarily represent the views of Canadian Institute for Health Information, the RCPSC, or the CFPC.

Notes

EDITOR’S KEY POINTS

  • Little is known about the actual practices of Canada’s public health doctors. Using data from the 2004 National Physician Survey, this study aimed to explore the practice profiles of community medicine specialists (CMs) and primary care physicians (PCPs), and identify any areas of overlap.

  • Among the top 10 areas of professional practice identified by respondents, primary care was the only area that CMs and PCPs had in common. Just over one-quarter of CMs indicated that they provided direct patient care, with the conditions most clearly related to direct patient care being hypertension, respiratory conditions, chronic diseases, and symptoms and ill-defined conditions.

  • Given that Canada is experiencing perceived shortages of both CMs and PCPs, clarifying their respective roles could help identify potential improvements in the provision of health care.

POINTS DE REPÈRE DU RÉDACTEUR

  • On sait peu de choses sur le mode de pratique des médecins de santé publique au Canada. Les auteurs se sont servi des données du sondage national des médecins de 2004 pour examiner les profils de pratique des spécialistes de médecine communautaire (SMC) et des médecins de première ligne (MPL), et ainsi cerner les domaines de chevauchement.

  • Parmi les 10 principaux domaines d’activité professionnelle identifiés par les répondants, les soins de première ligne étaient le seul domaine commun aux SMC et aux MPL. Un peu plus du quart des SMC disaient prodiguer des soins directement aux patients, les conditions les plus clairement reliés à ces soins étant l’hypertension, les affections respiratoires, les maladies chroniques et les symptômes ou conditions mal définis.

  • Vue la pénurie actuelle de SMC et de MPL au Canada, une clarification des rôles respectifs de ces groupes pourrait éventuellement contribuer à une meilleure dispensation des soins de santé.

Footnotes

  • This article has been peer reviewed.

  • Contributors

    Drs Russell and McIntyre conceived and designed the study, analyzed and interpreted the data, and drafted the manuscript. Both authors revised the manuscript critically for important intellectual content and have seen and approved the final version.

  • *Full text is available in English at www.cfp.ca.

  • Competing interests

    None declared

  • Copyright© the College of Family Physicians of Canada

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Canadian Family Physician: 55 (11)
Canadian Family Physician
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Boundaries and overlap
Margaret L. Russell, Lynn McIntyre
Canadian Family Physician Nov 2009, 55 (11) 1102-1103.e5;

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