Table 4.

Analysis of variance summary for outcomes

Variable	Pre-	Post-	1-Month	df	F	p	η2
	Mean (SD)	Mean (SD)	Mean (SD)
PrEP adherence		87.63 (18.60)	89.37 (19.74)	2, 74	7.500	0.001**	0.169
PrEP IMB constructs
Knowledge	7.05 (1.60)	7.63 (1.07)	7.50 (1.26)	2, 74	3.828	0.026*	0.094
Motivation	28.81 (5.05)	28.28 (5.33)	28.82 (6.27)	2, 74	0.125	0.883	0.003
Behavioral Skills	27.31 (7.94)	29.65 (7.02)	30.13 (8.33)	2, 74	2.652	0.077	0.067
Drug-related risk behaviorsa
Injected illicit drug	1.24 (1.11)	0.78 (1.10)	0.51(1.01)	2, 72	10.283	<0.001***	0.222
Shared injection equipment	1.11 (0.92)	0.33 (0.50)	0.44 (0.52)	2, 16	9.053	0.002**	0.531
Bleach cleaned used needle	1.22 (0.83)	1.56 (2.01)	1.33 (1.58)	2, 16	0.187	0.831	0.023
Sex-related risk behaviorsa
No. of sexual partners	7.38 (10.74)	2.44 (2.33)	1.69 (1.40)	2, 30	5.075	0.013*	0.253
Used condom during sex	0.75 (1.34)	1.56 (1.89)	2.06 (2.08)	2, 30	3.363	0.048*	0.183
HIV risk reduction
IMB constructs
Knowledge	3.21 (0.90)	3.63 (0.48)	3.55 (0.72)	2, 74	6.753	0.002**	0.154
Motivation	32.63 (5.83)	33.00 (5.62)	34.47 (4.28)	2, 74	3.225	0.045*	0.080
Behavioral Skills (Self-efficacy)	10.92 (3.78)	12.10 (3.60)	12.92 (3.55)	2, 74	6.476	0.003**	0.149
Demonstrated HIV risk reduction skills
Cleaning needle with bleach	40.24 (22.55)	74.26 (20.64)	74.56 (22.39)	2, 74	56.51	<0.001***	0.604
Male condom application	69.50 (10.84)	87.30 (10.55)	88.08 (10.54)	2, 74	66.57	<0.001***	0.643
Female condom application	59.12 (14.30)	79.29 (17.10)	81.05 (12.15)	2, 74	58.46	<0.001***	0.612

Note:

^aIn the past 30 days; Legend: IMB = Information-motivation-behavioral skills (IMB) model of health behavior change;

^*p < 0.05;

^**p < 0.010;

^***p <0.001;

Significance values refer to change overtime after intervention (pre-post)