Codes and Frequencies
VITMOCOMBO indicates whether a sample person had taken a multivitamin and/or mineral combination in the past 30 days. In 1987, this information was asked of sample adults who had taken vitamin/mineral supplements (VITANY) and multiple vitamins (VITAMULTV) in the past 12 months. In 2007, this information was collected from both sample adults and sample children who had taken vitamins or minerals in the past 30 days (VITMO). In 2010 and 2015, this question was included as part of the cancer supplement, and was asked of sample adults who reported taking vitamin or mineral supplements during the past month.
In 1987, sample adults were asked, "Did you take any multiple vitamins in the past month?"
In 2007, responses to VITMOCOMBO by sample adults were obtained as follows: While administering the NHIS, interviewers showed respondents a flash card containing a list of vitamins and minerals and asked, "During the past 12 months, have you taken any vitamins or minerals listed on this card for yourself?" Respondents who answered affirmatively (i.e., a "Yes" response in VITYR) were asked, "During the past 30 days, did you take any of these vitamins or minerals?" Sample adults who answered that question affirmatively (i.e., a "Yes" response in VITMO) were instructed, "Please tell me which of these vitamins or minerals you took in the past 30 days. If you take a multi-vitamin or mineral, include it as one supplement." Interviewers were told to "enter all that apply." The questions to collect this information for sample children were similar, except respondents were asked whether the sample child had taken any vitamins or minerals listed on a card.
In 2010 and 2015, respondents were asked "DURING THE PAST MONTH, did you take any multi-vitamins such as One-A-Day, Theragan, or Centrum?"
Multivitamin and/or mineral combination was one of 20 possible specific vitamins and minerals that sample adults and respondents for sample children could indicate using in the past month in 1987, 2007, 2010, and/or 2015.
The other such vitamins/minerals recognized by the NHIS (with years indicating availability) are:
- Calcium (VITMOCALC)
- Coral calcium (VITMOCCALC)
- Chromium (VITMOCHRO)
- Folic acid/folate (VITMOFOLIC)
- Iron (VITMOIRON)
- Magnesium (VITMOMAG)
- Niacin (VITMONIA)
- Vitamin Packet (VITMOPACK)
- Potassium (VITMOPOTA)
- Selenium (VITMOSELN)
- Vitamin A (VITMOVITA)
- Vitamin B6 (VITMOVITB6)
- Vitamin B12 (VITMOVITB12)
- Vitamin B complex (VITMOVITB)
- Vitamin C (VITMOVITC)
- Vitamin D (VITMOVITD)
- Vitamin E (VITMOVITE)
- Vitamin K (VITMOVITK)
- Zinc (VITMOZINC)
For 2007 only, the summary variables VIT1MOST and VIT2MOST report the vitamins and minerals taken most often by sample adults and sample children during the past month. For more information about the full range of variables related to the use of vitamins and minerals, see VITMO.
- 1987: Half of sample persons age 18+ (excluded from CACT supplement) who took vitamin/mineral supplements and multiple vitamins in the past 12 months.
- 2007: Sample adults age 18+ and sample children under 18 who have taken vitamins or minerals in the past 30 days.
- 2010; 2015: Sample adults 18+ who have taken vitamin or mineral supplements during the past month.
- 1987, 2007, 2010, 2015
- 1987, 2007, 2010, 2015 : SAMPWEIGHT