Table 3.
Characteristics of sample in the US military dietary supplement use study by demographic and lifestyle characteristics
| Variable | Strata | Sample size n | Sample proportion % |
|---|---|---|---|
| Gender | Men | 23 037 | 86·3 |
| Women | 3642 | 13·7 | |
| Age | 18–24 years | 4660 | 17·6 |
| 25–29 years | 5580 | 21·0 | |
| 30–39 years | 11 030 | 41·6 | |
| ≥40 years | 5275 | 19·9 | |
| Formal education | Some high school/high school graduate | 3879 | 14·5 |
| Some college | 11 378 | 42·7 | |
| Bachelor/graduate degree | 11 417 | 42·8 | |
| BMI | <25·0 kg/m2 | 7856 | 30·0 |
| 25·0–29·9 kg/m2 | 13 897 | 53·1 | |
| ≥30·0 kg/m2 | 4425 | 16·9 | |
| Weekly aerobic exercise duration | <91 min/week | 7286 | 27·3 |
| 91–180 min/week | 7285 | 27·3 | |
| 181–300 min/week | 5869 | 22·0 | |
| ≥301 min/week | 6240 | 23·4 | |
| Weekly resistance exercise duration | <45 min/week | 7776 | 29·1 |
| 46–135 min/week | 6257 | 23·5 | |
| 136–300 min/week | 6581 | 24·7 | |
| ≥301 min/week | 6066 | 22·7 | |
| Cigarette smoking | Never smoked | 16 706 | 64·3 |
| Smoked but quit | 4767 | 18·3 | |
| Smoker | 4511 | 17·4 | |
| Service branch | Air force | 9788 | 36·7 |
| Army | 7935 | 29·7 | |
| Marine corps | 3194 | 12·0 | |
| Navy | 5763 | 21·6 |