Table 2

 Median age at first sex (with interquartile range), by sex, country and survey, for respondents aged 15–24 years at survey

SurveyGhanaKenyaTanzaniaUgandaZambiaZimbabwe
Significance of difference with previous survey from Cox regression based test for equality of survival curves; bold type indicates differences significant at the 95% level.
Men
    First16.2 (4.0)
    Second18.4 (3.9)16.2 (3.5) 17.8 (3.9) 17.5 (3.8)15.9 (4.3)18.6 (3.8)
    Third 19.7 (5.2) 16.4 (4.5) 17.0 (3.5) 18.1 (4.1) 16.3 (3.7)
Women
    First16.8 (2.9)16.9 (3.6)17.1 (3.2)15.9 (3.1)16.5 (3.0)18.4 (4.5)
    Second16.8 (3.0) 17.3 (4.1) 17.1 (3.5)16.2 (3.3)16.5 (3.1) 18.6 (4.3)
    Third 17.6 (3.4) 17.3 (3.9) 16.9 (3.1) 16.7 (3.1) 16.7 (3.3) 18.4 (3.8)