Variables | β value | Standard β value | P value |
---|---|---|---|
Milk and yogurt intake | |||
 < 200 mL/d | Ref | Ref | Ref |
 ≥ 200 mL/d | 0.05 | 0.08 | 0.001 |
Candy intake | |||
 < 10 g/d | Ref | Ref | Ref |
 ≥ 10 g/d | − 0.04 | − 0.06 | 0.01 |
Taken calcium or vitamin D supplements within 3Â months | |||
No | Ref | Ref | Ref |
Yes | 0.07 | 0.05 | 0.02 |
Total hours of vigorous physical activity per week | |||
 < 1 h/day | Ref | Ref | Ref |
1 ~  < 2 h/day | − 0.009 | − 0.01 | 0.63 |
 ≥ 2 h/day | 0.01 | 0.02 | 0.60 |
Average time of outdoor activity per day | |||
 < 0.5 h/day | Ref | Ref | Ref |
0.5 ~  < 1 h/day | 0.01 | 0.02 | 0.50 |
 ≥ 1 h/day | 0.07 | 0.10 |  < 0.001 |
UV protection index | − 0.006 | − 0.06 | 0.02 |