Table 3.

Patient characteristics at intervention and control sites

	Intervention clinic (n=546 visits)	Control clinic (n=386 visits)	P value*
Mean age, years (±SD)	49.1±16.8	46.8±15.9	0.03
Race/ethnicity†			0.06
Caucasian	307/491 (62.5%)	185/337 (54.9%)
African American	115/491 (23.4%)	92/337 (27.3%)
Asian	38/491 (7.7%)	41/337 (12.2%)
Hispanic	31/491 (6.3%)	19/337 (5.6%)
Charlson Comorbidity Index ≥2	82 (15.0%)	41 (10.6%)	0.06

*P values refer to t test and χ² tests.

†Race/ethnicity was missing for 104 visits.