Table 1.

Network diversity: select characteristics of five US practice-based research networks (PBRNs)

PBRN name	Safety-net west PBRN	Oklahoma physicians resources/research network (OKPRN)	Mecklenburg area partnership for primary care research (MAPPR)	Pediatric research in office settings (PROS)	Practitioners engaged in applied research and learning (PEARL)
Network type	Mixed networka	Mixed networka	Family medicine	Pediatric	Dental
Mission	To improve the health of underserved populations, enhance their quality of care, and inform health policy through research using electronic health records (EHRs)	To improve health care services for clinicians in the state through research and quality-improvement initiatives in primary care and public health settings	To build a collaboration to improve health of our community by mobilizing health care professionals, community members, and researchers	To improve the health of children and enhance primary care by conducting national collaborative practice-based research	To generate ideas and conduct studies that seek research-based solutions to the problems routinely confronted by general dental practitioners
Geographic area served	Northwest region	State	University practices	National	International
Size
Members	2455	248	300	1768	200
Clinics	157	139	97	738	N/A

Notes: Details are from the Agency for Healthcare Research and Quality (AHRQ) PBRN Resource Center^13,15 and the PEARL website.¹⁶

^aCombination of family medicine, internal medicine, pediatrics, nursing, or other specialties.