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Age started taking birth control pills: Grouped ages

Codes and Frequencies

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For female sample adults ages 18 and older who have ever used birth control pills, BCPILLAGEGP reports how old the respondent was when she first started taking birth control pills, grouped into the following age intervals: 18 or younger, 19-21, 22-24, 25-29, 30-34, and 35 or older. For continuous (e.g., non-grouped) values, see BCPILLAGE1ST.

BCPILLAGEGP was first introduced in 1987 as part of a supplement on cancer epidemiology. For related variables, please use the IPUMS NHIS search function or drop-down menus.


There are no comparability issues with this variable.


  • 1987: Half of female sample persons age 18+ (excluded from CACT supplement) who ever used birth control pills.


  • 1987