In 2000, 2003, 2005, 2008 but not 2010 and forward, respondents were shown a flashcard listing the acceptable response categories, which included, "Always," "Most of the time," "Sometimes," "Rarely," and "Never." In 2010 and forward, respondents were read the same response categories but were not shown a flashcard.

The question wording changed slightly over time. In 2000 and 2003, the question asked about, "a very sunny day." However in 2005, 2008, 2010, and 2015, the question asks about, "a warm sunny day." Beginning in 2020, the question asks simply about "a sunny day."

In all years, the survey form instructed interviewers not to read the response category, "don't go out in the sun." If the respondent said that he/she did not go out into the sun, the Field Representative's Manual from 2000 instructed the interviewer to probe with, "What would happen if you did?" Similarly, the 2003 and 2020 forward Manual instructed interviewers not to read the response category "don't go out in the sun" and to only mark it if the respondent "specifically tells you this." The 2005, 2008, 2010, and 2015 Manuals did not offer specific advice about this question.

For more information, please see SUN1HR.