Table 2

Characteristics of Practice-Based Research Networks and Practices in Prescription for Health

CharacteristicPBRN 1PBRN 2PBRN 3PBRN 4PBRN 5PBRN 6PBRN 7PBRN 8PBRN 9
PBRN study designQuasi-experimental (patient level)Quasi-experimental (practice level)Pre-postQuasi-experimental (patient level)Pre-postPre-postPatient-randomized interventionPatient-randomized interventionPatient-randomized intervention
Study comparison groupUsual careUsual careNoneUsual careNoneNoneUsual careWeb-based informationPaper education materials
Practices in networks, n9615796668
Practice type, n
 Solo202282003
 Single specialty607404354
 Multispecialty166110311
Practice ownership, n
 Clinician003283003
 Hospital health system956401033
 University health system010001522
 Other006111110
Clinician FTE, mean (SD), n2.8 (1.8)4.3 (1.4)3.9 (3.3)3.5 (2.2)1.1 (0.3)3.5 (2.1)8.0 (3.5)7.8 (8.4)3.3 (3.1)
  • FTE=full-time equivalent; PBRN=practice-based research network.