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Time since last chest xray: 3, 5, or more years ago

Codes and Frequencies

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For sample persons aged 40 and over who had ever had a chest x-ray, CXRAY135YR reports whether the time of the most recent chest x-ray was within the past year, between 1 and 3 years ago, or over 3 years ago.

CXRAY135YR is part of a series of variables in 1992 dealing with cancer control. For related variables, please use the IPUMS NHIS search function and drop-down menus


There are no comparability issues.


  • 1992: Half of sample persons age 40+ in quarters 1 and 2, and in 2 weeks of quarter 3 (excluded from CAEP supplement) who have ever had a chest x-ray and month of last x-ray was NA AND year of last x-ray was refused/unknown/not ascertained or 1989 and date of last x-ray (number) is REF/NA/DK.


  • 1992