Table 4. Univariate Regression Coefficient Estimates Between Practice-based Research Network (PBRN) Characteristics, Research Experiences, and Community Engagement Strategy Implementation (N = 68)

PBRN Characteristics	β
PBRN age (years)
<5	−0.89
5–10	−0.40
≥10	Reference
Number of publications	0.21
Number of grants	−0.34
Geographic population served
Urban only	−2.11
Rural only	1.27
Both rural and urban	Reference
Racial communities specifically targeted for research in the past 5 years^*
Multiple racial/ethnic communities	3.41^†
Single community	2.63^†
None	Reference
How difficult is it to recruit from diverse racial/ethnic communities for research?
Difficult or very difficult	−3.57^†
Don't know/not applicable	−3.09
Not or somewhat difficult	Reference
How difficult is it to retain participants from diverse racial/ethnic communities through the duration of the research project?
Difficult or very difficult	−3.39^†
Don't know/not applicable	−4.75^†
Not or somewhat difficult	Reference
Number of special populations specifically targeted^*	1.75^†
PBRN has a community advisory board	3.19^†
PBRN is affiliated with a university^{^‡}	−0.59
BPRN is affiliated with a Clinical Translational Science Award^*	2.77^†
Planning scale^{^§}	0.80^†
Capacity scale^‖	0.55^†

↵* Response categories are not mutually exclusive.
↵† P < .20 is the criteria used for inclusion in multivariate analysis.
↵‡ Data obtained from the 2011 Agency for Health care Research and Quality PBRN Resource Center Registry; all other data were obtained from the PRIME Net Survey of PBRN directors.
↵§ How often does your network plan each activity?
↵‖ Rate your network's capacity to perform each activity.