Table 3.

Intervention Effects on Proportions of Respondents with Correct Knowledge of Modes of Transmission of HIV

Study (Ref, Year)	Study Country	Int Type	Sample Size (N)					P Value Typea	Proportion with Correct Answer to Transmission Route Question (N) (unless otherwise stated)
			Total	int bsl	cont bsl	int fu	cont fu		int bsl	cont bsl	P value	int fu	cont fu	P value
HIV can be transmitted through sexual contact (True)
[35] 2013	Nigeria	CE	60	60		60		NA	50		NR	55		NR
[39] 2016	Madagascar	Ed	155	28		28		P	0.64 (0.49) b		NR	0.64 (0.49)b
[40] 2011	South Africa	Ed	103	58	45	58	45	NA	32	30	NR	38	23	NR
[27] 1995	Zimbabwe	Ed	285	141	144	141	144	I	125	123	NR	127	104	ns
[13] 2006	Nigeria	MM	6000	6000		NR		NA	79.5%		NR	86.3%
[30] 2013	Nigeria	PE	160	80	80	80	80	I	70	34	< 0.001	60	34	< 0.001
[25] 2014	Nigeria	PE	400	200	200	195	192	P	184	182	< 0.001	194	178	0.82
[41] 2012	Kenya	PE	442			145	297	NA			NR	124	200	NR
[42] 2000	Senegal	PE	260	247		247		NA	235		NR	240		NR
[24] 2007	Nigeria	PE / drama	1029	591	438	588	430	P	426	307	< 0.001	582	322	NR
[38] 1999	Nigeria	Video / scenario	450	233	217	223	210	NA	192	183	NR	220	178	NR
HIV can be transmitted through contact with infected blood (True)
[35] 2013	Nigeria	CE	60	60		60		NA	48		NR	55.98		NR
[40] 2011	South Africa	Ed	103	58	45	58	45	NA	49	33	NR	58	45	NR
[13] 2006	Nigeria	MM	6000	6000		NR		NA	24.90%		NR	29.80%
[25] 2014	Nigeria	PE	400	200	200	195	192	P	186	176	0.02	192	173	0.71
[38] 1999	Nigeria	Video / scenario	450	233	217	223	210	NA	NR	NR	NR	210.066	166	NR
HIV can be transmitted through contact with contaminated sharps (e.g. needles) (True)
[43] 2010	Nigeria	Aud	1205	595	560	513	461	I	524	439	< 0.0001	483	373	0.0003
[35] 2013	Nigeria	CE	60	60		60		NA	49		NR	56		NR
[40] 2011	South Africa	Ed	103	58	45	58	45	NA	49	35	NR	58	44	NR
[37] 2012	South Africa	Ed	130	130		130		NA	101		NR	104		NR
[13] 2006	Nigeria	MM	6000	6000		NR		NA	39.10%		NR	46.50%
[25] 2014	Nigeria	PE	400	200	200	195	192	P	180	178	0.03	188	159	0.24
[38] 1999	Nigeria	Video / scenario	450	233	217	223	210	NA	NR	NR	NR	197	129	NR

Aud Audio-based, Bsl baseline, CE Community Education, Comp Computer-based, Cont Control, Ed Educational / informational, Fu Follow-up, Int Intervention, MM Mass Media, NR Not reported, PE Peer education, Scenario scenario-based /role-play based

^a P value type I = Int. vs. control, P = Pre- vs. Post-test. Where two p values are available, Int. vs. cont p values: 1st p value = Int, 2nd = Control. Pre-Post p values: 1st p value = pre-test, 2nd = post-test

^b Mean (SD)