Table 4 Incidence of birth defects in live-born infants and type of malformations according to the classification from code Q00-Q99 in the international classification of Disease, tenth editon
Characteristics | Normal (All births n = 635) | Overweight (All births n = 296) | Obesity(N = 133) | Normal vs. Overweight | Overweight vs. Obestiy | Normal vs. Obesity |
|---|---|---|---|---|---|---|
Number of birth defects, no. (%) | 13 (2.05%) | 2 (0.68%) | 2 (1.50%) | 0.101 | 0.369 | 0.507 |
 Singletons, no (%) | 10/341 (2.93%) | 1/144 (0.69%) | 1/79 (1.27%) | 0.121 | 0.586 | 0.363 |
 Multiples, no (%) | 3/294 (1.02%) | 1/152 (0.66%) | 1/54 (1.85%) | 0.581 | 0.460 | 0.495 |
Birth defects, by sex | ||||||
 Male, no (%) | 7/332 (2.11%) | 1/141 (0.71%) | 1/61 (1.64%) | 0.263 | 0.517 | 0.642 |
 Female, no (%) | 6/303 (1.98%) | 1/155 (0.65%) | 1/72 (1.39%) | 0.257 | 0.537 | 0.601 |
Detailed birth defects | ||||||
 Q00-Q07 nervous system | 0 | 0 | 0 | / | / | / |
 Q10-Q18 eye, ear, face, and neck | 1 (0.16%) | 0 | 0 | 0.536 | / | 0.363 |
 Q20-Q28 circulatory system | 7 (1.10%) | 0 | 2 (1.50%) | 0.223 | 0.231 | 0.482 |
 Q30-Q34 respiratory system | 1 (0.16%) | 0 | 0 | 0.536 | / | 0.363 |
 Q35-Q37 cleft lip and cleft palate | 0 | 0 | 0 | / | / | / |
 Q38-Q45 digestive system | 0 | 2 (0.68%) | 0 | 0.241 | 0.718 | / |
 Q50-Q56 genital organs | 0 | 0 | 0 | / | / | / |
 Q60-Q64 urinary system | 3 (0.47%) | 0 | 0 | 0.621 | 0.608 | 0.594 |
 Q65-Q79 musculoskeletal system | 1 (0.16%) | 0 | 0 | 0.536 | / | 0.363 |
 Q80-Q89 other malformations | 0 | 0 | 0 | / | / | / |
 Q90-Q99 chromosomal abnormalities | 0 | 0 | 0 | / | / | / |