Variable | β* ± SE | Mean 25(OH)D** | P | Partial |
---|---|---|---|---|
 | (95% CI) |  | r2*** | |
91-Day UV-B | 0.04 ± 0.01 | 0.5 (0.3, 0.8) | 0.0001 | 0.03 |
Sex | Â | Â | Â | 0.01 |
 Female | (Reference) | 54.2 (49.6, 58.9) |  |  |
 Male | −0.31 ± 0.05 | 49.8 (48.3, 51.3) | < 0.0001 |  |
Age | Â | Â | Â | 0.01 |
 12-19 years | −0.13 ± 0.10 | 52.3 (49.6, 55.0) | 0.16 |  |
 20-59 years | (Reference) | 54.2 (49.6, 58.9) |  |  |
 60-79 years | 0.36 ± 0.09 | 59.6 (56.8, 62.4) | 0.0001 |  |
Ethnicity | Â | Â | Â | 0.06 |
 White | (Reference) | 54.2 (49.6, 58.9) |  |  |
 Non-White | −1.10 ± 0.12 | 39.3 (36.5, 42.1) | < 0.0001 |  |
Sun Exposure | Â | Â | Â | 0.01 |
 < 30 min/d | (Reference) | 54.2 (49.6, 58.9) |  |  |
 ≥ 30 min/d and < 2 h/d | 0.22 ± 0.07* | 57.5 (55.4, 59.6) | 0.002 |  |
 ≥ 2 h/d | 0.42 ± 0.09 | 60.5 (57.7, 63.4) | < 0.0001 |  |
Vitamin D Supplementation | Â | Â | Â | 0.01 |
 No | (Reference) | 54.2 (49.6, 58.9) |  |  |
 Yes | 0.44 ± 0.06 | 60.8 (59.1, 62.6) | < 0.0001 |  |
Milk Consumption | Â | Â | Â | 0.02 |
 < Once/d | (Reference) | 54.2 (49.6, 58.9) |  |  |
 Once/d | 0.29 ± 0.05** | 58.6 (57.0, 60.2) | < 0.0001 |  |
 > Once/d | 0.58 ± 0.06 | 63.1 (61.3, 64.9) | < 0.0001 |  |
Body Mass Index | Â | Â | Â | 0.02 |
 < 25 kg/m2 | (Reference) | 54.2 (49.6, 58.9) |  |  |
 ≥ 25 and < 30 kg/m2 | −0.13 ± 0.07# | 52.2 (50.3, 54.2) | 0.05 |  |
 ≥ 30 kg/m2 | −0.63 ± 0.05 | 45.3 (44.0, 46.7) | < 0.0001 |  |
Physical Activity Index | Â | Â | Â | 0.01 |
 Inactive | (Reference) | 54.2 (49.6, 58.9) |  |  |
 Moderately Active | 0.30 ± 0.08 | 57.1 (55.4, 58.8) | 0.0009 |  |
 Active | 0.19 ± 0.06 | 58.6 (56.3, 61.1) | 0.0002 |  |