Table 3

Estimated increases in HIV screening over 12-month intervention

	% screened at baseline	Change in % screened over 12 months		Comparison of trend in % screened over time by reference group
	% screened at baseline	95% confidence limit	P value	P value	P value
Cohort	50.5%	2.6% (1.9%, 3.2%)	<0.0001	0.022	0.073
KPOAK	38.1%	1.9% (1.6%, 2.1%)	<0.0001	**	Ref
KPNC	29.2%	1.8% (1.7%, 1.8%)	<0.0001	Ref	**

**P value: 0.328.
KPNC, Kaiser Permanente Northern California; KPOAK, Kaiser Permanente Oakland Medical Center.