Impact of intervention on selected primary and secondary outcomes in 2007/8 according to years since last exposure to in-school intervention1.

1 Overall prevalence ratio adjusted for gender, age group, stratum and ethnic group (Sukuma vs non-Sukuma). Prevalence ratio according to years since exposure to the intervention adjusted for gender, age group, stratum and ethnic group (Sukuma vs non-Sukuma) and total years of exposure to the in-school component of the intervention (99-04).2. From test for interaction.3. Among those who reported having had sex in past 12m.