  
<prompt> Median Age at First Sex, Birth and Marriage | Among women and men age 25-49 | (Women, Median age at first sex, 0.166) (Men, Median age at first sex, 0.167) (Women, Median age at first birth, 0.195) (Men, Median age at first birth, na) (Women, Median age at first marriage, 0.205) (Men, Median age at first marriage, 0.244) <response> The median age at first sexual intercourse among women and men age 25-49 who had a live birth in the past 12 years is 17.2 years, while the median age at first sexual intercourse is 21.7 years.  