This study is a cluster-randomised, community intervention trial to measure the impact of female condom introduction on STD prevalence among Kenyan agricultural workers. The intracluster correlation coefficient of baseline STD prevalences at the 12 sites was 0.0011.
PIP: A cluster-randomized, community intervention trial to measure the impact of female condom introduction on sexually transmitted disease (STD) prevalence was conducted among Kenyan agricultural workers. The intracluster correlation coefficient (ICC) was used to measure the degree of homogeneity within clusters in comparison to total variability. The women in the sample population received condoms and were exposed to an STD prevention program through group meetings, video presentations, puppetry, and other folk media. They were also screened and tested for gonorrhea, chlamydia, and vaginal trichomoniasis. Tests were repeated after 6 and 12 months. The ICC of baseline STD prevalence at the 12 sites was 0.0011, and the proportion of women with STDs was higher at the control sites, which indicates a negligible clustering effect.