Codes and Frequencies
For sample adults aged 40 years and older who ever had a CT colonography or virtual colonoscopy (CTCOLEV), CTCOLLY reports the main reason that the respondent underwent the procedure.
The Field Representative's Manual advised that:
See Survey Text and Codes tabs.
For more information, please see CTCOLEV.
- 2010; 2015: Sample adults age 40+ who have had a CT colonography or virtual colonoscopy.
- 2010, 2015
- 2010, 2015 : SAMPWEIGHT