Table 3.
Variable | HR† | 95 % CI | P value | P value for trend |
---|---|---|---|---|
UV-B flux (J/cm2) | ||||
<461 (ref.) | 1·00 | – | <0·0001 | |
461–<628 | 0·93 | 0·90, 0·97 | 0·001 | |
≥628 | 0·86 | 0·82, 0·90 | <0·0001 | |
BMI (kg/m2) | ||||
<22·0 (ref.) | 1·00 | – | <0·0001 | |
22·0–24·9 | 0·99 | 0·92, 1·05 | 0·68 | |
25·0–29·9 | 1·10 | 1·03, 1·18 | <0·01 | |
30·0–34·9 | 1·28 | 1·18, 1·39 | <0·0001 | |
≥35·0 | 1·58 | 1·39, 1·79 | <0·0001 | |
Physical activity (MET/week) | ||||
Q5 (ref.) | 1·00 | – | 0·01 | |
Q4 | 0·99 | 0·93, 1·04 | 0·62 | |
Q3 | 0·99 | 0·93, 1·04 | 0·63 | |
Q2 | 1·02 | 0·96, 1·07 | 0·59 | |
Q1 | 1·07 | 1·01, 1·13 | 0·03 | |
Race | ||||
Caucasian (ref.) | 1·00 | – | ||
African American | 1·17 | 0·98, 1·40 | 0·08 | |
Asian | 1·21 | 1·06, 1·38 | 0·004 | |
Other | 0·99 | 0·90, 1·09 | 0·85 | |
Vitamin D from food (μg/d) | ||||
≥10·00 (ref.) | 1·00 | – | 0·98 | |
7·50–9·99 | 0·94 | 0·89, 1·00 | 0·05 | |
5·00–7·49 | 0·95 | 0·90, 1·00 | 0·05 | |
2·50–4·99 | 0·98 | 0·93, 1·04 | 0·56 | |
<2·50 | 0·97 | 0·89, 1·04 | 0·39 | |
Vitamin D from supplements (μg/d) | ||||
≥10·00 (ref.) | 1·00 | – | 0·20 | |
5·00–9·99 | 0·92 | 0·87, 0·98 | 0·01 | |
0·025–4·99 | 0·91 | 0·85, 0·97 | 0·003 | |
0 | 0·96 | 0·90, 1·02 | 0·19 |
25(OH)D, 25-hydroxyvitamin D; HR, hazard ratio; Q5–Q1, quintile 5–quintile 1; ref., reference category; MET, metabolic equivalents.
Predicted 25(OH)D score not included in model.
Model adjusted for all predictor score covariates presented in the model including smoking (CSI, comprehensive smoking index), pipe (yes/no), chewing tobacco (yes/no), multivitamin use (yes/no), vitamin E (quintiles), vitamin C (quintiles), dental profession (dentist/non-dentist), alcohol consumption (0, 0·1–4·9, 5·0–14·9, 15·0–29·9, ≥30·0 g/d), routine physical examination (yes/no) and diabetes (yes/no).