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PAPLMO 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 female sample persons aged 18 and over who ever had a Pap smear, PAPLMO reports the months since her most recent Pap smear. Please see the Comparability and Universe tabs for changes in the universe between samples.

Please use the IPUMS NHIS drop down menu and search functions for related variables.


Apart from changes in the universe and question wording, there are no comparability issues. Changes in survey design (e.g., quarters in which the information was collected) may affect raw frequencies, but do not affect comparability of the variable. As always, data users should use the prescribed IHIS weights.


  • 1987: Half of female sample persons age 18+ (excluded from CAEP supplement) who have ever heard of a pap smear test and have ever had a pap smear.
  • 1992: Half of female sample persons age 18+ in quarters 1 and 2, and in 2 weeks of quarter 3 (excluded from CAEP supplement) who ever had a Pap smear test.
  • 2000; 2003: Female sample adults age 18+ who ever had Pap smear test.


  • 1987, 1992, 2000, 2003