. 2012 Oct 24;176(10):875–885. doi: 10.1093/aje/kws179

Table 3.

Changes in Sexual Behavior and HIV Risk Perception From PT₀ to PT₂ Among Male Circumcision Acceptors and Nonacceptors, Rakai, Uganda, 2007–2011

	Male Circumcision Acceptors (n = 1,297)							Male Circumcision Nonacceptors (n = 300)							P Value Testing H^a,b₀: Δ_ac = Δ_nac
	PT₀		PT₂		Δ^a_ac	95% CI	P Value Testing H^a,b₀: Δ_ac = 0	PT₀		PT₂		Δ^a_nac	95% CI	P Value Testing H^a,b₀: Δ_nac = 0
	No.	%	No.	%	Δ^a_ac	95% CI	P Value Testing H^a,b₀: Δ_ac = 0	No.	%	No.	%	Δ^a_nac	95% CI	P Value Testing H^a,b₀: Δ_nac = 0
Sexually active in past year, yes	1,132	87.3	1,218	93.9	7.7	6.1, 9.4	<0.0001	269	89.7	283	94.3	5.4	2.2, 8.6	<0.01	0.21
No. of sex partners in past year															0.04^c
0	165	12.7	79	6.1	−7.7	−9.4, −6.1	<0.0001	31	10.3	17	5.7	−5.4	−8.6, −2.2	<0.01	0.21
1	688	53.1	750	57.8	5.3	2.3, 8.2	<0.01	168	56.0	157	52.3	−3.1	−8.9, 2.7	0.30	0.01
2	444	34.2	468	36.1	2.5	−0.2, 5.2	0.08	101	33.7	126	42.0	8.5	3.0, 13.9	0.002	0.05
No. of nonmarital partners in past year															0.45^c
0	706	54.4	747	57.6	3.3	0.5, 6.2	0.02	166	55.3	164	54.7	0.1	−5.8, 6.0	0.98	0.33
1	399	30.8	388	29.9	−0.9	−3.9, 2.0	0.53	83	27.7	94	31.3	3.3	−2.6, 9.2	0.28	0.21
≥2	192	14.8	162	12.5	−2.4	−4.6, −0.3	0.03	51	17.0	42	14.0	−3.4	−8.0, 1.3	0.16	0.72
Alcohol use before sex in past year, yes^d	674	61.2	584	53.0	−7.8	−10.5, −5.0	<0.0001	169	64.8	152	58.2	−6.1	−11.3, −1.0,	0.02	0.58
Condom use with all partners in past year^d															0.55^c
Never	543	49.3	636	57.8	9.1	6.2, 12.0	<0.0001	123	47.1	153	58.6	12.4	6.2, 18.6	<0.0001	0.35
Sometimes	418	38.0	389	35.3	−2.1	−5.1, 0.9	0.17	106	40.6	89	34.1	−6.1	−12.7, 0.4	0.07	0.28
Always	140	12.7	76	6.9	−7.0	−8.9, −5.2	<0.0001	32	12.3	19	7.3	−6.3	−10.5, −2.0	<0.01	0.75
Condom use with nonmarital partners in past year^e															0.28^c
Never	59	17.9	84	25.5	7.0	2.6, 11.4	<0.01	8	10.8	18	24.3	13.5	4.4, 22.5	<0.01	0.21
Sometimes	130	39.4	123	37.3	−1.2	−6.9, 4.5	0.69	27	36.5	28	37.8	0.8	−10.4, 12.1	0.89	0.76
Always	141	42.7	123	37.3	−5.8	−11.3, −0.3	0.04	39	52.7	28	37.8	−14.3	−25.1, −3.4	0.01	0.17
No condom use at last sex with any partner^d	895	81.3	977	88.7	8.7	6.5, 11.0	<0.0001	216	82.8	228	87.4	6.1	1.1, 11.2	0.02	0.36
No condom use at last sex with nonmarital partner^e	155	47.0	176	53.3	6.4	0.9, 11.8	0.02	29	39.2	43	58.1	18.8	8.0, 29.7	0.01	0.04
Self-perceived HIV risk, likely	364	28.1	678	52.3	24.5	21.8, 27.3	<0.0001	79	26.3	164	54.7	27.8	21.9, 33.8	<0.0001	0.32

Abbreviations: CI, confidence interval; H₀, null hypothesis; HIV, human immunodeficiency virus; PT₀, start of the posttrial surveillance; PT₂, the second posttrial visit; Δ_ac, change in percentage from PT₀ to PT₂ within the male circumcision acceptors; Δ_nac, change in percentage from PT₀ to PT₂ within the male circumcision nonacceptors.

^a After adjustment for loss to follow-up at PT₂ using the inverse probability weighting method. Results are similar to those without accounting for the informative loss to follow-up.

^b P value based on the Wald test using linear models for modeling the marginal distributions of repeated outcomes.

^c If the behavior variable has more than 2 categories (e.g., number of partners, condom use), the P value is provided for the global test for testing the overall difference in change of the behavior between the 2 groups (i.e., df = no. of categories − 1).

^d Among men reporting being sexually active at both PT₀ and PT₂.

^e Among men reporting nonmarital/nonconsensual relations at both PT₀ and PT₂.