Codes and Frequencies
For sample adults over age 40 who ever had an office blood stool test, BSTOYL reports the main reason for most recent office blood stool test. Recognized responses were: part of a routine exam, because of a problem, or some other reason.
In 2015, the wording of the question asking whether respondents had ever had a blood stool test during an office visit BSTOEV changed slightly to more inclusive language. Prior to 2015, respondents were asked whether they ever had "a blood stool test" in which a doctor or other health care professional collected a stool sample during an office visit. Beginning in 2015, the language was expanded to "a blood stool or FIT test".
- 2010; 2015: Sample adults age 40+ who have had an office blood stool test.
- 2010, 2015
- 2010, 2015 : SAMPWEIGHT