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Time since most recent breast exam: Months


BREXMAGO is a 3-digit-numeric variable.

000: Less than 1 month
900: 900+ months
901: Less than 3 months ago (exact unknown)
902: 3 months to under 1 year (unknown number)
903: Less than 1 year (unknown number)
904: 1-3 years ago (unknown number)
905: 3+ years ago (unknown number)
906: Less than 3 years ago (unknown number)
907: Over 3 years ago (unknown number)
908: 3-5 years ago (unknown number)
909: 5+ years ago (unknown number)
996: Not in Universe
997: Unknown-refused
998: Unknown-not ascertained
999: Unknown-don't know


For sample females who have ever had a breast exam, BREXMAGO reports how long it has been since their last breast exam, in months.

BREXMAGO was first introduced as part of a supplement on cancer control. For related variables, please use the IPUMS NHIS search function and drop-down menus.


Changes in the sampling universe (e.g., age) may affect comparability over time. Researchers should use caution when making comparison across years.


  • 1987: Half of sample persons age 40+ (excluded from CAEP supplement) who have ever heard of a breast physical exam and have ever had a breast physical exam.
  • 1992: Half of sample persons in quarters 1 and 2, and in 2 weeks of quarter 3 (excluded from CAEP supplement) who are female, age 30+, and have ever had a breast exam.
  • 2000: Female sample adults age 30+ who ever had a breast exam.


  • 1987, 1992, 2000