Table 1 Association of serum 25(OH)D level with woman's general characteristics and season
From: Serum 25 hydroxyvitamin D levels and affecting factors among preconception fertile women
Characteristics | Group (n) | Serum 25(OH)D (mean ± SD ng/mL) | t/F | p |
|---|---|---|---|---|
Age | 22–30 years (277) | 14.3 ± 5.0 | 2.203 | 0.029 |
31–44 years (133) | 15.6 ± 6.0 | |||
BMI (kg/m2) | Underweight (46) | 13.7 ± 4.5 | 1.273 | 0.281 |
Normal (293) | 14.9 ± 5.4 | |||
Overweight and Obese (71) | 14.4 ± 5.7 | |||
Gravidity | No (170) | 14.1 ± 5.1 | 1.813 | 0.071 |
One and more (240) | 15.1 ± 5.6 | |||
Parity | No (330) | 14.4 ± 5.3 | 2.290 | 0.023 |
One (80) | 15.9 ± 5.7 | |||
Numbers of induced abortion | No (293) | 14.7 ± 5.7 | 0.143 | 0.866 |
One (85) | 14.7 ± 5.2 | |||
Two and more (32) | 15.2 ± 6.2 | |||
Employment status | Working (340) | 14.3 ± 5.2 | 3.127 | 0.002 |
Non-working (70) | 16.5 ± 5.8 | |||
Season | Spring (128) | 14.5 ± 5.1# | 16.417 | 0.000 |
Summer (102) | 16.6 ± 5.0 | |||
Autumn (88) | 15.9 ± 5.6 | |||
Winter (92) | 11.8 ± 4.8* |