| Cases (n = 188) | Controls (n = 391) | p-value |
---|
Age, years | 30.1 ± 5.8 | 30.1 ± 5.8 | 0.989 |
BMI, kg/m2
| 24.7 ± 4.8 | 23.9 ± 4.0 | 0.031 |
Smokers, n (%) | 34 (18.1%) | 42 (10.7%) | 0.015 |
Hypothyroidism, n (%) | 16 (8.5%) | 12 (3.1%) | 0.006 |
- Values are mean ± standard deviation; n, numbers of women; BMI, body mass index: BMI at inclusion (cases), BMI at first antenatal visit (controls); Smokers: smoker during ≥1 pregnancy ending with miscarriage (cases), smoker at first visit to the prenatal center in gestational week 10 (controls); Hypothyroidism: elevated serum TSH-levels according to local laboratory limits.