Table 1.
Mean 25-OHD concentrations by sex, body mass index, physical activity and dietary habits.
| Number | 25-OHD (ng/ml) | t-test | p | |
|---|---|---|---|---|
| Mean ± SD | ||||
| Sex | ||||
| Male | 98 | 39.46 ± 12.39 | -1.72 | 0.087 |
| Female | 102 | 43.57 ± 14.19 | ||
| BMI | ||||
| Obese | 88 | 32.41 ± 12.75 | -10.56 | 0.000* |
| Non-obese | 112 | 48.74 ± 9.11 | ||
| Physical activity | ||||
| Low (<4 hours/week) | 131 | 38.61 ± 13.29 | -4.425 | 0.000* |
| High (≥4 hours/week) | 69 | 47.14 ± 12.28 | ||
| Milk intake | ||||
| Less than once/day | 72 | 36.11 ± 14.69 | -4.47 | 0.000* |
| Once or more/day | 128 | 44.62 ± 11.85 | ||
| Fast food intake | ||||
| >Once/week | 134 | 43.56 ± 14.26 | 1.52 | 0.132 |
| Once or less /week | 66 | 40.06 ± 12.63 | ||
*
P < 0.05 is significant; BMI = Body mass index.