Table 1.
Baseline characteristics of patients in the study.
| Paternal BMI (kg/m2) | |||||
|---|---|---|---|---|---|
| Underweight (n = 201) | Normal (n = 3813) | Overweight (n = 2913) | Obesity (n = 756) | ||
| Maternal age (y) | 29.79 ± 3.90 | 31.17 ± 3.68 | 31.50 ± 3.77 | 31.56 ± 3.87 | |
| Paternal age (y) | 30.97 ± 4.03 | 32.54 ± 4.62 | 32.97 ± 4.56 | 33.08 ± 4.86 | |
| Gravidity (%) | <3 | 172 (85.6%) | 3066 (80.4%) | 2300 (79.0%) | 595 (78.7%) |
| ≥3 | 29 (14.4%) | 747 (19.6%) | 613 (21.0%) | 161 (21.3%) | |
| Parity (%) | <2 | 171 (85.1%) | 2793 (73.2%) | 2085 (71.6%) | 546 (72.2%) |
| ≥2 | 30 (14.9%) | 1020 (26.8%) | 828 (28.4%) | 210 (27.8%) | |
| Maternal education (%) | High school and below | 22 (10.9%) | 236 (6.2%) | 167 (5.7%) | 68 (9.0%) |
| Bachelor’s degree | 143 (71.2%) | 2601 (68.2%) | 1984 (68.1%) | 532 (70.4%) | |
| Master degree or above | 36 (17.9%) | 976 (25.6%) | 762 (26.2%) | 156 (20.6%) | |
| Paternal education (%) | High school and below | 15 (7.4%) | 225 (5.9%) | 160 (5.5%) | 60 (7.9%) |
| Bachelor’s degree | 158 (78.6%) | 2501 (65.6%) | 1992 (68.4%) | 521 (68.9%) | |
| Master degree or above | 28 (14.0%) | 1087 (28.5%) | 761 (26.1%) | 175 (23.2%) | |
| Conception (%) | Natural | 184 (91.5%) | 3451 (90.5%) | 2607 (89.5%) | 660 (87.3%) |
| IVF | 17 (8.5%) | 361 (9.5%) | 306 (10.5%) | 96 (12.7%) | |
|
Maternal BMI
(kg/m2) |
Underweight | 55 (27.4%) | 603 (15.8%) | 373 (12.8%) | 85 (11.2%) |
| Normal | 131 (65.2%) | 2783 (73.0%) | 2077 (71.3%) | 504 (66.7%) | |
| Overweight | 11 (5.5%) | 374 (9.8%) | 382 (13.1%) | 126 (16.7%) | |
| Obesity | 4 (1.9%) | 53 (1.4%) | 81 (2.8%) | 41 (5.4%) | |
| Maternal medical history (%) | Chronic hypertension | 0 (0%) | 17 (0.4%) | 15 (0.5%) | 7 (0.9%) |
| Diabetes | 0 (0%) | 0 (0%) | 3 (0.1%) | 2 (0.3%) | |
| Heart disease | 0 (0%) | 2 (0.1%) | 2 (0.1%) | 2 (0.3%) | |
Data are given as number (percentage) or as the mean ± SD. BMl, body mass index.