Table 2 The association between 25(OH)D per 10 ng/mL and GDM according to baseline characteristics
Sub-group | n | OR | 95% CI | p value | p value for interaction |
|---|---|---|---|---|---|
Age | 0.80 | ||||
< 30 | 5215 | 0.87 | (0.77, 0.98) | 0.03 | |
≥ 30 | 3253 | 0.90 | (0.77, 1.06) | 0.20 | |
BMI | 0.95 | ||||
< 18.5 | 1426 | 0.84 | (0.64, 1.10) | 0.20 | |
18.5–23 | 5270 | 0.91 | (0.80, 1.04) | 0.16 | |
23–27.5 | 1503 | 0.90 | (0.73, 1.09) | 0.27 | |
≥ 27.5 | 269 | 0.84 | (0.57, 1.22) | 0.36 | |
Season | 0.83 | ||||
Spring | 1641 | 0.72 | (0.51, 1.01) | 0.06 | |
Summer | 2748 | 0.91 | (0.81, 1.02) | 0.36 | |
Autumn | 1709 | 0.88 | (0.69, 1.12) | 0.24 | |
Winter | 2370 | 0.74 | (0.63, 0.87) | < 0.001 | |