This research aimed to understand whether and how different approaches to team-based primary care in Ontario and Québec have improved prescribing and related health outcomes among older adults. Both provinces  implemented major reforms to the organization and delivery of primary care, with goals of improving quality, patient experience, and outcomes. This research project answered the following questions using a mixed-methods design: 

1. What are the primary care practice and patient characteristics that are associated with polypharmacy, potentially inappropriate prescribing, and adverse drug events for older adults in Ontario and Québec?

2. To what extent have the different approaches taken to implement team-based primary care in Ontario and Québec affected appropriateness, multiple drug use, and drug-related hospitalizations for older adults? 

3. How is medication management in primary care shaped by provincial policies, and what are the regulatory, policy and other mechanisms by which medication management is established and implemented in multi-professional team practice?

4. How can primary care policies optimize the organization of team-based primary care to improve medication management and related health outcomes among older adults?