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Ages by which 10%, 25%, 50%, 75%, and 90% of individuals have had sex, by birth cohort.
Time from first sex to first contraceptive use, by age at first sex, women aged 15 to 29 at interview, NSFG 2006–2010.
Sexual Initiation by Single Year of Age, Women and Men Born 1984–1993
Pregnancy, Birth, and Abortion Rates by Single Year of Age, 2008
↵a Rates are per 1000 females in the particular age group.
↵b Denominator for rates is females aged 11.
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