Effectiveness of an “Exclusive Intervention Strategy” to increase medical male circumcision uptake among men aged 25–49 years in South Africa

Table 3 Logistic regression investigating the association of sexual risk behaviours for Phase 1 and Phase 2

	Relationship Status in the last 12 months^a		Age of last sexual partner^b		Used a condom the last sex act^c		Report of any STIs in the past 6 months^d
	No partner or one steady/casual partner at any given time	> One partner at some given time (1)	About same or > 5 years older	> 5 years younger (1)	Yes	No (1)	Had an STI in the past 6 months	No STI in the past 6 months (1)
Phase 1 (23 Jun −30 Sep 2014) N = 1597	1136 (71.1)	459 (28.7)	1159 (72.6)	393 (24.6)	789 (49.4)	763 (47.8)	1531 (95.9)	45 (2.8)
Phase 2 (22 Jun −30 Sep 2015) N = 1216	781 (64.2)	433 (35.6)	824 (67.8)	331 (27.2)	550 (45.2)	606 (49.8)	1092 (89.8)	35 (2.9)
Unadjusted OR (95% CI) Phase 2 to Phase 1, p-value	1.37 (1.17;1.61), p < 0.001		1.18 (1.00;1.41), p = 0.05		1.14 (0.98;1.33), p = 0.09		1.09 (0.70;1.71), p = 0.71
Adjusted for age^e OR (95% CI) Phase 2 to Phase 1, p-value	1.39 (1.18;1.63), p < 0.001		1.02 (0.85;1.24), p = 0.81		1.06 (0.91;1.25), p = 0.42		1.09 (0.69;1.71), p = 0.71

^atwo missing relationship status in each phase
^b42 not sexually active in the past 12 months in Phase 1, 56 not sexually active in the past 12 and 5 missing in Phase 2
^c42 not sexually active in the past 12 months, 2 did not know partner’s age and 1 missing in Phase 1. 56 not sexually active in the past 12 months in Phase 2, 2 did not know, I, 4 missing in Phase 2
^d110 excluded in the analysis because of missing data (21 Phase 1, 89 Phase 2)
^eAdjusted for age in four categories; 18–20 years, 21–24 years, 25–30 years, 31–49 years

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