Exploring differences between public and private providers in primary care: findings from a large Swedish region.

This study contributes to the sparse literature on differences between public and private primary care practices (PCCs). The purpose was to explore if differences in performance and characteristics between public and PCCs persist over time in a welfare market with patient choice and provider competition, where public and private providers operate under similar conditions. The analysis is based on data from a national patient survey and administrative registries in a large Swedish region, covering PCC observations in 2010 and 2019, i.e., the year after and 10 years after introducing choice and competition in the region. The findings suggest that differences across owner types tend to decrease over time in welfare markets. Differences in patients' experiences, PCC size, patient mix and the division of labour have decreased or disappeared between 2010 and 2019. There were small but significant differences in process measures of quality in 2019; public PCCs complied better with prescription guidelines. While the results demonstrate a convergence between public and private PCCs in regards to their characteristics and performance, differences in patients' experiences in regards to socioeconomic conditions persisted. Such unwarranted variation calls for continued attention from policy makers and further research about causes.