SIGLDYR is a 4-digit-numeric variable.
0: Not in universe
9996: Time period format
9998: Unknown-not ascertained
9999: Unknown-don't know
For sample adults aged 40 years and older who ever had a sigmoidoscopy (SIGEV), SIGLDYR reports the year of the respondent's most recent sigmoidoscopy. SIGLDYR should be used alongside SIGLDMO, which reports the month of most recent sigmoidoscopy.
Please see SIGEV for more information on variables covering sigmoidoscopy.
- 2010; 2013; 2015; 2018: Sample adults age 40+ who have had a sigmoidoscopy.
- 2010, 2013, 2015, 2018
- 2010, 2013, 2015, 2018 : SAMPWEIGHT