BSTHLNO is a 2-digit-numeric variable.
0: Not in universe
98: Unknown-not ascertained
99: Unknown-don't know
For sample adults aged 40 and older who have ever had a home blood stool test and reported the time since the last home blood stool test in a number and time period format, BSTHLNO reports the number of time units. BSTHLNO should be used alongside BSTHLTP, which reports the type of time unit for the time since the last home blood stool test.
Please see BSTHEV for more information about home blood stool testing variables.
Aside from slight changes in wording, this variable is comparable over time. In 2015, the wording of the question asking whether respondents had ever had a home blood stool test BSTHEV changed slightly to more inclusive language. Prior to 2015, respondents were asked whether they ever had "a blood stool test, using a HOME test kit?" Beginning in 2015, respondents were asked whether they had ever had "a blood stool or FIT test, using a HOME test kit?"
- 2000; 2003; 2005; 2008; 2010; 2013; 2015; 2018: Sample adults age 40+ who ever had home blood stool test and answered in number and time period format.
- 2000, 2003, 2005, 2008, 2010, 2013, 2015, 2018
- 2000, 2003, 2005, 2008, 2010, 2013, 2015, 2018 : SAMPWEIGHT