  
<prompt> Median age at first sex and first marriage
 Median age in years 
 [["", "Women age 25-49", "Men age 30-59"], ["Median age at first sex", 17.2, 21.7], ["Median age at first marriage", 19.1, 27.7]] 
 <response> The median age at first sexual intercourse among women age 25-49 in Nigeria is 17.2 years, while the median age among men is 21.7 years.  