Codes and Frequencies
For sample adults in 2007 who had taken one or more vitamin or mineral supplements during the past 30 days (VITMOSUPNO) and had taken the first vitamin/mineral supplement to prevent (but not to treat or cure) a specific health problem or condition (VIT1PREV), VIT1PMOST reports for which health condition the respondent had most taken a first vitamin or mineral supplement.
Respondents were first asked, "For what specific health problems or conditions did you take [fill: 1st vitamin] to prevent?" (See VIT1MOST for the first vitamin/mineral supplement taken most often by the respondent.) Sample adults could report that they had used a first vitamin/mineral supplement to prevent any of 82 health problems or conditions--81 specific conditions plus 1 residual "other" category--recognized by the 2007 NHIS. See VIT1PADD for the full list of conditions.
If the respondent indicated that the first vitamin/mineral supplement was used to prevent more than one condition (VIT1PCONNO), he or she was asked the question for VIT1PMOST: "For which one of these health problems or conditions did you take [fill: 1st vitamin] the most to prevent?" Interviewers were instructed, "If respondent cannot choose one condition, probe for condition most important for using [fill: 1st vitamin]."
With respondents who had taken more than one vitamin/mineral supplement during the past 30 days (i.e., for whom VITMOSUPNO was greater than 1) to prevent specific health problems (VIT2PREV), interviewers pursued a similar line of questioning about the specific health problems or conditions prevented by a second vitamin/mineral supplement (e.g., see VIT2PCONMOST).
Researchers interested in the conditions treated by vitamin/mineral supplements may wish to consult the following summary variables:
- Condition for which 1st vitamin supplement was taken to treat most (VIT1TCONMOST)
- Condition for which 2nd vitamin supplement was taken to treat most (VIT2TCONMOST)
- 2007: Sample adults age 18+ who have taken one or more vitamin supplements during the past 30 days and took the first vitamin supplement to prevent but not treat or cure a specific health problem or condition.
- 2007 : SAMPWEIGHT