 A ten-country school-based study in southern Africa in 2007 found 19.6% of female students and 21.1% of male students aged 11–16 years reported they had experienced forced or coerced sex.Rates among 16-year-olds were
28.8% in females and 25.4% in males.Comparing the same schools in eight countries between 2003 and 2007, age-standardised on the 2007 Botswana male sample, there was no significant decrease between 2003 and 2007 among females in any country and inconsistent changes among males.