The effect of HIV educational interventions on HIV-related knowledge, condom use, and HIV incidence in sub-Saharan Africa: a systematic review and meta-analysis

Table 2 Intervention Effects on Proportions of Respondents with Correct Knowledge of Risk Reduction through Condom Use

Study (Ref, Year)	Study Country	Int Type	Sample Size (N)					P Value Type^a	Proportion with Correct Answer to Risk Reduction Question (N) (unless otherwise stated)
Study (Ref, Year)	Study Country	Int Type	Total	int bsl	cont bsl	int fu	cont fu	P Value Type^a	int bsl	cont bsl	P value	int fu	cont fu	P value
Using condoms during sexual intercourse can reduce the risk of HIV transmission (True)
[35] 2013	Nigeria	CE	60	60		60		NA	41		NR	42		NR
[26] 1994	South Africa	CE	567	231	336	206	276	I	74	101	0.617	92	75	0.001
[36] 2013	South Africa	Comp / game	253	195		195		P	156		0.5	157
[27] 1995	Zimbabwe	Ed	285	141	144	141	144	I	112	82	NR	113	64	< 0.001
[37] 2012	South Africa	Ed	130	130		130		NA	52		NR	72		NR
[28] 2006	Zimbabwe	Ed	869			251	618	I				123	229	< 0.001
[13] 2006	Nigeria	MM	6000	6000		NR		NA	86.2%	93.2%	NR	89.1%	95%	NR
[25] 2014	Nigeria	PE	400	200	200	195	192	P	139	146	0.0001	169	145	0.66
[24] 2007	Nigeria	PE / drama	1029	591	438	588	430	P	290	244	< 0.001	443	250	NR
[29] 2016	Mozambique	Video	915	NR	NR	462	453	I	NR	NR	NR	425	362	< 0.001
[38] 1999	Nigeria	Video / scenario	450	233	217	223	210	NR	NR	NR	NR	215	132	NR

Bsl baseline, CE Community Education, Comp Computer-based intervention, Cont Control, Drama drama-based intervention, Ed Educational / informational, Fu Follow-up, MM Mass Media, Int Intervention, 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