Table 2.

Means and Standard Deviations for Scale Scores by Time and Condition, For All Staff

	Intervention		Control		p-value*
Scale	Baseline (n=57)	18-Months (n=60)	Baseline (n=62)	18-Months (n=64)
Knowledge	4.36 (0.61)	4.40 (0.50)	4.25 (0.76)	4.34 (0.63)	.292
Practice	3.28 (1.02)	3.15 (1.12)	2.70 (1.03)	2.82 (1.12)	.781
Barriers	1.78 (0.66)	1.68 (0.74)	1.92 (0.67)	1.96 (0.66)	.140
Efficacy	3.40 (0.53)	3.45 (0.62)	3.25 (0.70)	3.20 (0.54)	.377
Beliefs	4.07 (0.62)	4.05 (0.63)	3.89 (0.67)	3.83 (0.61)	.288

^*Mean scale scores at 18 months were compared between groups, controlling for baseline scale and type of program (HIV care clinic or drug abuse treatment clinic). Statistical models incorporated an indicator of clinic to control for the effect of staff clustering within clinic.