CATNUMLUNG is a 2-digit-numeric variable.
96: Not in universe
98: Unknown-not ascertained
99: Unknown-don't know
For sample adults aged 40 and older who ever had a CAT or CT scan of the chest area to check for lung cancer, CATNUMLUNG reports the number of CT or CAT scans to check or screen for lung cancer in the past 3 years.
- 2015: Sample adults aged 40+ who ever had CT/CAT scan of the chest area to check for lung cancer.
- 2015 : SAMPWEIGHT