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Regularity between periods, past 12 months

Codes and Frequencies

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For sample female adults ages 18 to 49 who have had a menstrual period in the past 12 months and are not currently pregnant OR sample female adults ages 50 and older, MENSREGY reports whether the length of time between the respondent's periods is more regular, less regular, or similar to 12 months ago.

MENSREGY was first introduced in 1999. For related variables, please use the IPUMS NHIS search function or drop-down menus.


There are no comparability issues with this variable.


  • 1999: Female sample adults who have had a menstrual period in the past 3 months AND who are age 18 to 49 and not pregnant (or whose pregnancy status is unknown) OR who are age 50+.


  • 1999