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Duration since last blood pressure check: Months


HYPCHECKMO is a 4-digit-numeric variable.

0: Less than 1 month
1182: 1182+ months
9995: Never
9996: Not in Universe
9997: Unknown-refused
9999: Unknown-don't know


For sample persons age 18 and over, HYPCHECKMO reports the number of months since blood pressure was last checked by a doctor or other health professional.


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


  • 1990-1991: Sample persons age 18+.
  • 1993: Half of sample persons age 18+ in quarters 3 and 4 (excluded from AIDS supplement).
  • 1994: Half of sample persons age 18+ (excluded from AIDS supplement) who have ever had their blood pressure checked by a doctor or health professional.


  • 1990-1991, 1993-1994