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Table 3 Intervention Effects on Proportions of Respondents with Correct Knowledge of Modes of Transmission of HIV

From: 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

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
  1. 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
  2. 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
  3. b Mean (SD)