Table 2.
Logistic regression for having spontaneous abortions (SAs) at age 18–20 from the Health Examinees Study (HEXA), 2004–2012
| BMI (kg/m2) | Total women | Total women with a history of at least | Comparison by groups | ||||
|---|---|---|---|---|---|---|---|
| (N=80,447) | One abortion | Two abortion | Three abortion | ≥1 SAs vs. No. SA | ≥2 SAs vs. 0–1 SA | ≥3 SAs vs. 0–2 SA | |
| (N=17,180) | (N=4,875) | (N=1,704) | |||||
| N | N (%) | N (%) | N (%) | OR1 (95% CI) | OR1 (95% CI) | OR1 (95% CI) | |
| <18.5 | 13128 | 3,122 (17.5) | 896 (18.38) | 335 (19.7) | 1.10 (1.05–1.15) | 1.14 (1.06–1.23) | 1.29 (1.14–1.46) |
| 18.5–22.9 | 56692 | 12,462 (70.0) | 3,380 (69.3) | 1,149 (67.4) | 1.00 (ref) | 1.00 (ref) | 1.00 (ref) |
| 23–24.9 | 8148 | 1,675 (9.4) | 438 (9.0) | 148 (8.7) | 0.93 (0.88–0.99) | 0.91 (0.82–1.01) | 0.88 (0.74–1.04) |
| ≥25 | 2479 | 551 (3.1) | 161 (3.3) | 72 (4.2) | 1.06 (0.96–1.16) | 1.13 (0.96–1.33) | 1.39 (1.09–1.78) |
1Adjusted for age, education, smoking before first pregnancy, drinking status and first pregnancy age