Incident HIV No incident HIV  
  n=127         n=950          
  % n N 95%CI   % n N 95%CI   p value
Age (Mean) 18.5     18.3 18.8 18.4     18.2 18.5 0.323
Education: to grade 10 85.0 108 127 77.2 92.8 87.2 828 950 82.5 91.9 0.524
Socio-economic status (Mean) -0.017     -0.272 0.238 -0.003     -0.136 0.129 0.922
Had a pregnancy 24.4 31 127 17.0 31.9 17.5 166 948 14.6 20.4 0.035
Relationship power: low equity 40.7 50 123 31.0 50.3 30.2 271 897 26.4 34.0 0.023
>1 episode of physical or sexual IPV 35.4 45 127 26.5 44.4 21.8 207 950 19.0 24.6 0.001
HSV2 at baseline 40.9 52 127 31.5 50.4 20.3 193 950 17.5 23.1 <0.0001
Intervention : Stepping Stones 46.5 59 127 31.6 61.3 51.7 491 950 38.8 64.5 0.276
Correct condom use at last sex before final HIV result 40.9 83 126 30.9 51.0 55.8 530 944 52.1 59.5 0.006
Sexual practices during follow up                  
Partner age difference of 5+ years during follow up 57.5 73 127 49.1 65.9 52.8 647 950 64.9 71.3 0.014
2+ partners during follow up 52.0 66 127 41.8 62.1 36.8 350 950 34.1 39.6 0.004
Transactional sex with a once off partner 2.4 3 127 0.0 5.0 0.4 4 945 0.0 0.8 0.141
Transactional relationship with a main partner 19.7 25 127 12.7 26.6 12.5 118 945 9.8 15.2 0.040
Transactional relationship with an on-going secret partner 12.6 16 127 5.6 19.6 4.6 43 945 2.9 6.2 0.019
Transactional sex and multiple partners during follow up : neither 48.0 61 127     63.1 599 950     0.0003
2+ partners, no transactional sex with a casual partner 38.6 49 127     32.1 305 950      
Transactional sex with a casual partner and 2+ partners 13.4 17 127     4.8 46 950      
Table 2: Socio-demographic and behavioural characteristics of women who did and did not acquire HIV over 2 years*.