Development and validation of an algorithm using health administrative data to define patient attachment to primary care providers

Am I attached? A patient-partnered approach to creating infographics about attachment to primary care in Ontario, Canada

BACKGROUND

Having a primary care provider is associated with better care experiences and lower care costs. In 2021, INSPIRE-PHC released Primary Care Data Reports - publicly available summaries of administrative billing data about how populations in each of Ontario's 60 health teams use primary care services. Given the characterization of Canadian primary care systems as 'in crisis', publicly available data about primary care at the regional level presented a significant opportunity for knowledge mobilization. An understandable resource could ground the public conversation about primary care access in data. Recognizing the role that lived experience plays in ensuring the public understands research findings, a partnership between patient advisors, Ontario Health Team representatives, researchers, and trainees was established to co-produce public-facing infographics based on primary care data.

METHODS

Evidence-based guidelines for public health infographic creation and elements of transformative action research guided a six-meeting process to engage up to 14 patient advisors, three Ontario Health Team staff and two primary care trainees. Patient advisors were affiliated with a provincial patient-oriented primary health care research group or a Hamilton-based Ontario Health Team. Ninety-minute meetings were conducted virtually, and notes were shared with attendees to ensure they accurately reflected the conversation. Two consultations with Ontario Health Team-affiliated primary care providers provided direction and ensured project outputs aligned with local priorities.

RESULTS

Project partners shared feedback on draft infographics, audience identification, priority elements from Primary Care Data Reports to include in the infographics, and aesthetic features (e.g., headings, colour scheme, charts). Project partners felt the most important metrics to convey to the public were those that simultaneously reinforced the benefits of primary care on individual health outcomes and health system costs.

CONCLUSIONS

Patient engagement in research is becoming widespread, but co-developing knowledge products with patient and health system partners is less common. Our approach to engaging patients prevented both oversimplification and unnecessary complexity in a public-facing visual about attachment to primary care.

Characteristics of walk-in clinic physicians and patients in Ontario: Cross-sectional study

OBJECTIVE

To describe family physicians who primarily practise in a walk-in clinic setting and compare them with family physicians who provide longitudinal care.

DESIGN

A cross-sectional study that linked results from a 2019 physician survey to provincial administrative health care data in Ontario. The characteristics, practice patterns, and patients of physicians primarily working in a walk-in clinic setting were compared with those of family physicians providing longitudinal care.

SETTING

Ontario.

PARTICIPANTS

Physicians who primarily worked in a walk-in clinic setting in 2019, as indicated by an annual physician survey.

MAIN OUTCOME MEASURES

Physician demographic and practice characteristics, as well as their patients' demographic and health care utilization characteristics, were reported according to whether the physician was a walk-in clinic physician or a family physician who provided longitudinal care.

RESULTS

Compared with the 9137 family physicians providing longitudinal care, the 597 physicians who self-identified as practising primarily in walk-in clinics were more frequently male (67% vs 49%) and more likely to speak a language other than English or French (43% vs 32%). Walk-in clinic physicians tended to have more encounters with patients who were younger (mean 37 vs 47 years), who had lower levels of prior health care utilization (15% vs 19% in highest band), who resided in large urban areas (87% vs 77%), and who lived in highly ethnically diverse neighbourhoods (45% vs 35%). Walk-in clinic physicians tended to have more encounters with unattached patients (33% vs 17%) and with patients attached to another physician outside their group (54% vs 18%).

CONCLUSION

Physicians who primarily work in walk-in clinics saw many patients from historically underserved groups and many patients who were attached to another family physician.

Toward a universal definition of provider-patient attachment in primary care

OBJECTIVE

To explore definitions of provider-patient attachment in primary care (PC) and help inform a universal definition of provider-patient attachment.

DATA SOURCES

Comprehensive searches were conducted using the electronic databases MEDLINE (Ovid), PubMed, CINAHL (EBSCO), PsycInfo (Ovid), Social Sciences Abstracts (EBSCO), Cochrane Library, Scopus, Embase (Ovid), Google Scholar, and ResearchGate.

STUDY SELECTION

A scoping review was conducted. Articles focusing on PC setting, provider-patient attachment, and attachment approaches (enrolment, rostering, registration, empanelment) were included. All articles were from English-language publications and were available in full text in or after 2005. Of the 5955 unique titles, 97 peer-reviewed articles and 45 gray literature sources were included.

SYNTHESIS

The term attachment is sometimes used interchangeably with enrolment and empanelment. Provider-patient attachment is a confirmed affiliation between a patient and a regular primary care provider (PCP). This affiliation can be formal or informal. The goals are to deliver longitudinal care and establish a therapeutic relationship (relational continuity). Enrolment and empanelment are mechanisms that enable the affiliation of a patient with a PCP. Enrolment is a formal process of provider-patient affiliation, while empanelment is the assignment of a patient to a PCP.

CONCLUSION

A universal definition of provider-patient attachment is provided: the confirmed and documented affiliation between a patient and a regular PCP (a clinician, ie, a family physician or nurse practitioner, etc), or a combination of clinician and care team or practice in which the PCP is responsible for providing longitudinal and continuous care to the patient via any delivery channel (ie, in person, remotely, or both), enabled by provider access to patient health information.

High Healthcare Costs in Childhood Inflammatory Bowel Disease: Development of a Prediction Model Using Linked Clinical and Health Administrative Data

BACKGROUND

The incidence of pediatric-onset inflammatory bowel disease (IBD) and the costs of caring for individuals with IBD are both increasing. We calculated the direct healthcare costs of pediatric IBD in the first year after diagnosis and developed a model to predict children who would have high costs (top 25th percentile).

METHODS

Using data from the Canadian Children IBD Network inception cohort (≤16 years of age, diagnosed between 2013 and 2019) deterministically linked to health administrative data from Ontario, Canada, we estimated direct healthcare and medication costs accrued between 31 and 365 days after diagnosis. Candidate predictors included age at diagnosis, sex, rural/urban residence location, distance to pediatric center, neighborhood income quintile, IBD type, initial therapy, disease activity, diagnostic delay, health services utilization or surgery around diagnosis, regular primary care provider, and receipt of mental health care. Logistic regression with stepwise elimination was used for model building; 5-fold nested cross-validation optimized and improved model accuracy while limiting overfitting.

RESULTS

The mean cost among 487 children with IBD was CA$15 168 ± 15 305. Initial treatment (anti-tumor necrosis factor therapy, aminosalicylates, or systemic steroids), having a mental health care encounter, undergoing surgery, emergency department visit at diagnosis, sex, and age were predictors of increased costs, while having a regular primary care provider was a predictor of decreased costs. The C-statistic for our model was 0.71.

CONCLUSIONS

The cost of caring for children with IBD in the first year after diagnosis is immense and can be predicted based on characteristics at diagnosis. Efforts that mitigate rising costs without compromising quality of care are needed.

Key informants perspectives on creating a high impact research department in family and community medicine: a qualitative project

BACKGROUND

Primary care is integral to the health system and population health. Primary care research is still in development and most academic departments lack effective research investments. High impact primary care research programs are needed to advance the field to ensure a robust primary care system for the future. The project objective was to understand key informants' views of structures, functions, and processes required to create a high impact research program in an academic primary care department.

METHODS

A descriptive qualitative project with key informants from research programs in primary care. Participants included international research leaders in primary care (n = 10), department of family and community researchers (n = 37) and staff (n = 9) in an academic primary care department, other university leaders (n = 3) and members of the departmental executive leadership team (1 department; 25 members). Semi-structured interviews (n = 27), and focus groups (n = 6) were audio recorded, transcribed, and analyzed using thematic analysis. We used a socioecological framework which described micro, meso, macro levels of influence.

RESULTS

At the micro level despite barriers with respect to funding, protected time and lack of formal mentorship, personal motivation was a key factor. At the meso level, the organizational structure that promoted collaboration and a sense of connection emerged as a key factor. Specifically research leaders identified a research faculty development pipeline based on equity, diversity, inclusion, indigeneity, and accessibility principles with thematic areas of focus as key enablers. Lastly, at the macro level, an overarching culture and policies that promoted funding and primary care research was associated with high impact programs.

CONCLUSION

The alignment/complementarity of micro, meso, and macro level factors influenced the creation of a high impact research department in primary care. High impact research in primary care is facilitated by the development of researchers through formalized and structured mentorship/sponsorship and a department culture that promote primary care research.

Characteristics of patients attached to near-retirement family physicians: a population-based serial cross-sectional study in Ontario, Canada

OBJECTIVES

Population ageing is a global phenomenon. Resultant healthcare workforce shortages are anticipated. To ensure access to comprehensive primary care, which correlates with improved health outcomes, equity and costs, data to inform workforce planning are urgently needed. We examined the medical and social characteristics of patients attached to near-retirement comprehensive primary care physicians over time and explored the early-career and mid-career workforce's capacity to absorb these patients.

DESIGN

A serial cross-sectional population-based analysis using health administrative data.

SETTING

Ontario, Canada, where most comprehensive primary care is delivered by family physicians (FPs) under universal insurance.

PARTICIPANTS

All insured Ontario residents at three time points: 2008 (12 936 360), 2013 (13 447 365) and 2019 (14 388 566) and all Ontario physicians who billed primary care services (2008: 11 566; 2013: 12 693; 2019: 15 054).

OUTCOME MEASURES

The number, proportion and health and social characteristics of patients attached to near-retirement age comprehensive FPs over time; the number, proportion and characteristics of near-retirement age comprehensive FPs over time.

SECONDARY OUTCOME MEASURES

The characteristics of patients and their early-career and mid-career comprehensive FPs.

RESULTS

Patient attachment to comprehensive FPs increased over time. The overall FP workforce grew, but the proportion practicing comprehensiveness declined (2008: 77.2%, 2019: 70.7%). Over time, an increasing proportion of the comprehensive FP workforce was near retirement age. Correspondingly, an increasing proportion of patients were attached to near-retirement physicians. By 2019, 13.9% of comprehensive FPs were 65 years or older, corresponding to 1 695 126 (14.8%) patients. Mean patient age increased, and all physicians served markedly increasing numbers of medically and socially complex patients.

CONCLUSIONS

The primary care sector faces capacity challenges as both patients and physicians age and fewer physicians practice comprehensiveness. Nearly 15% (1.7 million) of Ontarians may lose their comprehensive FP to retirement between 2019 and 2025. To serve a growing, increasingly complex population, innovative solutions are needed.

The association between patients' timely access to their usual primary care physician and use of walk-in clinics in Ontario, Canada: a cross-sectional study

BACKGROUND

Challenges in timely access to one's usual primary care physician and the ongoing use of walk-in clinics have been major health policy issues in Ontario for over a decade. We sought to determine the association between patient-reported timely access to their usual primary care physician or clinic and their use of walk-in clinics.

METHODS

We conducted a cross-sectional study of Ontario residents who had a primary care physician by linking population-based administrative data to Ontario's Health Care Experience Survey, collected between 2013 and 2020. We described sociodemographic characteristics and health care use for users of walk-in clinics and nonusers. We measured the adjusted association between self-reported same-day or next-day access and after-hours access to usual primary care physicians or clinics and the use of walk-in clinics in the previous 12 months.

RESULTS

Of the 60 935 total responses from people who had a primary care physician, 16 166 (weighted 28.6%, unweighted 26.5%) reported visiting a walk-in clinic in the previous 12 months. Compared with nonusers, those who used walk-in clinics were predominantly younger, lived in large and medium-sized urban areas and reported a tight, very tight or poor financial situation. Respondents who reported poor same-day or next-day access to their primary care physician or clinic were more likely to report having attended a walk-in clinic in the previous 12 months than those with better access (adjusted odds ratio [OR] 1.23, 95% confidence interval [Cl] 1.13-1.34). Those who reported being unaware that their primary care physician offered after-hours care had a higher likelihood of going to a walk-in clinic (adjusted OR 1.14, 95% Cl 1.07-1.21).

INTERPRETATION

In this population-based health survey, patient-reported use of walk-in clinics was associated with a reported lack of access to same-day or next-day care and unawareness of after-hours care by respondents' usual primary care physicians. These findings could inform policies to improve access to primary care, while preserving care continuity.

Trends in attachment to a primary care provider in Ontario, 2008-2018: an interrupted time-series analysis

BACKGROUND

Attachment to a regular primary care provider is associated with better health outcomes, but 15% of people in Canada lack a consistent source of ongoing primary care. We sought to evaluate trends in attachment to a primary care provider in Ontario in 2008-2018, through an equity lens and in relation to policy changes in implementation of payment reforms and team-based care.

METHODS

Using linked, population-level administrative data, we conducted a retrospective observational study to calculate rates of patients attached to a regular primary care provider from Apr. 1, 2008, to Mar. 31, 2019. We evaluated the association of patient characteristics and attachment in 2018 using sex-stratified, adjusted, multivariable logistic regression models and used segmented piecewise regression to evaluate changing trends before and after implementation of a policy that restricted physician entry to alternate models.

RESULTS

Attachment increased from 80.5% (n = 10 352 385) in 2008 to 88.9% of the population (n = 12 537 172) in 2018, but was lower among people with low comorbidity, high residential instability, material deprivation, rural residence and recent immigrants. Inequities narrowed for recent immigrants, males and people with lower incomes over the study period, but disparities persisted for these groups. Attachment grew by 1.47% annually until 2014 (p < 0.0001), but was stagnant thereafter (annual percent change of 0.13, p = 0.16).

INTERPRETATION

Lack of sustained progress in attachment followed reduced levels of physician entry to alternate funding models. Although disparities narrowed for many groups over the study period, persistent gaps remained for immigrants and people with lower incomes; targeted interventions and policy changes are needed to address these persistent gaps.

Distance, access and equity: a cross-sectional geospatial analysis of disparities in access to primary care for French-only speakers in Ottawa, Ontario

BACKGROUND

Although language concordance between patients and primary care physicians results in better quality of care and health outcomes, little research has explored inequities in travel burden to access primary care people of linguistic minority groups in Canada. We sought to investigate the travel burden of language-concordant primary care among people who speak French but not English (French-only speakers) and the general public in Ottawa, Ontario, and any inequities in access across language groups and neighbourhood ruralities.

METHODS

Using a novel computational method, we estimated travel burden to language-concordant primary care for the general population and French-only speakers in Ottawa. We used language and population data from Statistics Canada's 2016 Census, neighbourhood demographics from the Ottawa Neighbourhood Study, and collected the main practice location and language of primary care physicians from the College of Physicians and Surgeons of Ontario. We measured travel burden using Valhalla, an open-source road-network analysis platform.

RESULTS

We included data from 869 primary care physicians and 916 855 patients. Overall, French-only speakers faced greater travel burdens than the general population to access language-concordant primary care. Median differences in travel burden were statistically significant but small (median difference in drive time 0.61 min, p < 0.001, interquartile range 0.26-1.17 min), but inequities in travel burden between groups were larger among people living in rural neighbourhoods.

INTERPRETATION

French-only speakers in Ottawa face modest - but statistically significant - overall inequities in travel burden when accessing primary care, compared with the general population, and higher inequities in specific neighbourhoods. Our results are of interest to policy-makers and health system planners, and our methods can be replicated and used as comparative benchmarks to quantify access disparities for other services and regions across Canada.

Association of physician financial incentives with primary care enrolment of adults with serious mental illnesses in Ontario: a retrospective observational population-based study

BACKGROUND

Financial incentives may improve primary care access for adults with schizophrenia or bipolar disorder (serious mental illness [SMI]). We studied the association between receipt of the SMI financial premium paid to primary care physicians and rostering of adults with SMI in different patient enrolment models (PEMs), including enhanced fee-for-service and capitation-based models with and without interdisciplinary team-based care.

METHODS

We conducted a retrospective cohort study involving Ontario adults (≥18 yr) with SMI in PEM practices, in fiscal years 2016/17 and 2017/18. Using negative binomial models, we examined relations between rostering and the primary care model and the contribution of the incentive. Similar models were developed for adults with type 1 or 2 diabetes mellitus and the general population.

RESULTS

Among 9730 physicians in PEM practices, 4866 (50.0%) received a premium and 448 319 (88.4%) people with SMI in PEMs were rostered. Compared with enhanced fee for service, the likelihood of rostering people with SMI was 3.0% higher for patients in capitation with team-based care (adjusted relative risk [RR] 1.03, 95% confidence interval [CI] 1.02-1.04), with similar results for capitation without team-based care (adjusted RR 1.00 95% CI 0.99-1.01). Rostering for people with diabetes was similar in team-based care (adjusted RR 1.02, 95% CI 1.02-1.03) but higher in capitation without team-based care (adjusted RR 1.03, 95% CI 1.02-1.03) and slightly higher for the Ontario population (team-based care 1.04, 95% CI 1.04-1.05, capitation without team-based care 1.03, 95% CI 1.03-1.04).

INTERPRETATION

Rostering of people with SMI was lower than for the general population. Additional policy measures are needed to address persisting inequities and to promote rostering of this underserved population with complex needs.

The receipt of information by family physicians about their patient's emergency department visits: a record linkage study of electronic medical records to health administrative data

Background

Canadians are known to be frequent users of emergency department (ED) care. However, the exchange of information from ED visits to family physicians (FPs) is not well known. Our objectives were to determine whether Canadian FPs received information about their patient’s ED visit and the patient characteristics related to the receipt of ED information.

Methods

This study was a descriptive record linkage study of FP Electronic Medical Record (EMR) data linked to health administrative data. Our study cohort included patients who had at least one ED visit in 2010 or 2015 in Ontario, Canada. An ED visit could include a transfer to or from another ED. The receipt of information from an ED note was examined in relation to patient age, sex, neighbourhood income quintiles, rurality and comorbidity.

Results

There were 26,609 patients in 2010 and 50,541 patients in 2015 with at least one ED visit. In 2010, 53.3% of FPs received an ED note for patients having a single ED visit compared to 41.0% in 2015. For patients with multiple ED visits, 58.2% of FPs received an ED note in 2010 compared to 45.7% in 2015. FPs were more likely to receive an ED note for patients not living in low income neighbourhoods, older patients, patients living in small urban areas and for patients having moderate comorbidity. FPs were less likely to receive a note for patients living in rural areas.

Conclusions

Community-based FPs are more likely to get information after an ED visit for their older and sicker patients. However, FPs do not receive any information from EDs for over half their patients. Electronic health record technologies and their adoption by ED providers need to improve the seamless transfer of information about the care provided in EDs to FPs in the community.