Consistent with these findings, additional analysis (see S7 Table ) found that the association between age-disparate partnerships and transactional sex was highly significant within urban areas (aOR: 4.14; p<0.01; 95%CI: 2.03–8.46), but not significantly different within rural areas (aOR: 1.04; p = 0.92; 95%CI: 0.42–2.58).
While the strength of this association was relatively weak (only borderline significant at the 10% level) among all partnerships involving 16–24 year old women–indicating the need for further research to tests this relationship–concurrency was identified as a particularly strong risk factor associated with age-disparate partnerships among adolescent (16 to 19 year old) women.