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Lifetime frequency of chest x-rays

Codes and Frequencies

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For sample persons aged 40 and over who had ever had a chest x-ray, CXRAYLIFE reports the total number of chest x-rays the person has had in his or her lifetime.

CXRAYLIFE is part of a series of variables introduced in 1992 dealing with adult cancer. 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.


  • 1992