Final grant reports were collected when available, along with published manuscripts from each grant. In addition, we conducted telephone interviews with each principal investigator (PI) in December 2014. Some PIs chose to invite additional members of their research teams to join the calls. Interviews focused on clarifying information about the primary care transformation initiative that was studied; how successful the initiative was and what, if any, impacts were measured; challenges to practice change that were identified; key motivators for participation; and key lessons learned. Interviews were recorded and transcribed.
These materials were used to identify similarities and differences across the TPC studies in regards to the size and type of practices studied, approaches to transformation studied, the methods used to study the transformation efforts, the outcomes of practice changes that were observed, and key lessons learned. A conventional content analysis approach was used to identify themes across grants as reported.