Sisira Sarma

Physician payment models and preventive cancer screening: a population-based retrospective cohort analysis from Ontario, Canada

Abstract Background Ontario's primary care reforms have introduced three blended physician payment models: (i) blended fee-for-service (BFFS), (ii) blended capitation without interprofessional teams, and (iii) blended capitation with teams. Each model includes the same pay-for-performance incentives, yet their impact on cancer screening, including that during the COVID-19 pandemic, remains unclear. Methods We used linked administrative data (2018–23) to examine the associations between these models and colorectal, cervical, and breast cancer screening rates. Fractional probit regression models, adjusting for physician and patient characteristics, estimated the effects of each payment model relative to the BFFS. Stratified analyses explored heterogeneity by physician sex, age, practice size, rurality, and socioeconomic deprivation. Results Compared with the BFFS model, the blended capitation models were associated with higher screening rates, although initial differences were modest. By 2022, nonteam and team capitation models had colorectal screening rates 3.0% and 3.6% higher, respectively, than those of the BFFS. Similar but smaller increases were observed for cervical and breast cancer screening. These advantages persisted through COVID-19 disruptions and were most pronounced among physicians serving rural or socioeconomically disadvantaged populations. Stratified analyses indicated that female, younger, and higher-volume physicians performed better in capitation-based models. Conclusions Blended capitation arrangements, especially those integrating interprofessional teams, appear more effective than the BFFS in delivering preventive cancer screening. Strengthening team-based primary care and targeted incentives could bolster preventable cancer screening rates in the population, even under pandemic-related challenges. These findings can inform policy decisions aimed at improving population health through optimized primary care provisions.

Interprofessional team-based primary care practice and preventive cancer screening: evidence from Family Health Teams in Ontario, Canada

Health care reforms introduced interprofessional team-based primary care to optimize access to health care and preventive services. In this context, preventive cancer screening represents an important measure as it is essential for the early detection of cancer and treatment. We investigated the effects of Family Health Teams (FHTs), an interprofessional team-based primary care practice setting, on cancer screening rates in Ontario, Canada. By utilizing comprehensive health administrative data from April 1st 2011 to March 31st 2023, we determined the effect of FHT on screening rates for breast, cervical, and colorectal cancer while controlling for relevant physician and patient characteristics. Our analytical framework employs fractional probit models, including the Mundlak procedure, and generalized estimating equations to assess the impact of practicing in FHTs on cancer screening rates, while accounting for unobserved physician heterogeneity. Our results indicate that compared to non-FHTs, physicians practicing in FHTs have higher breast (2.4%), cervical (2%), and colon (0.8%) cancer screening rates per physician per year. The effectiveness of FHTs in promoting cancer screenings is particularly pronounced in smaller practices and among populations in rural and economically deprived areas. Our findings highlight the role of teams in enhancing preventive health care services potentially through task shifting mechanisms and suggest that such models may offer a pathway to improving access to preventive health care, especially in marginalized populations. Our research contributes to the literature by providing empirical evidence on the benefits of interprofessional team-based primary care in improving cancer screening.