Table 5.
Relationship between obstetric complications during pregnancy and pre-pregnancy body weight (n = 1996)
| Pre-pregnancy BMI categories | |||||
|---|---|---|---|---|---|
| Obstetrics complications | Normal weight (BMI 18.5-24.9 kg/m 2 ) | Overweight (BMI 25–29.9 kg/m 2 ) | Unadjusted OR; 95% CI 2 | Obese (BMI ≥ 30 kg/m 2 ) | Unadjusted OR; 95% CI 3 |
| Pregnancy induced hypertension | 46 (3.5) | 49 (10.4) | 3.1; 2.1-4.6** | 33 (15.6) | 5.7; 3.7-8.8** |
| Preeclampsia | 47 (3.6) | 48 (10.2) | 3.5; 2.0-4.6** | 35 (16.6) | 5.3; 3.3-8.5** |
| Abruptio placentae | 16 (1.2) | 4 (0.8) | 1.4; 0.5-4.3 | 1 (0.5) | 2.6; 0.3-19.6 |
| Eclampsia | 3 (0.2) | 3 (0.6) | 2.8; 0.5-13.8 | 5 (2.4) | 10.6; 2.5-44.6** |
| Gestational diabetes mellitus | 28 (2.1) | 27 (5.7) | 3.0; 1.8-5.0** | 23 (10.9) | 6.5; 3.7-11.2** |
| Intrauterine growth restriction | 32 (2.4) | 7 (1.5) | 1.6; 0.7-3.8 | 1 (0.5) | 5.3; 0.7-38.6 |
| Maternal pyrexia during labour | 57 (4.3) | 18 (3.8) | 1.1; 0.7-1.9 | 13 (6.2) | 0.7; 0.4-1.3 |
| Chorioamnionitis | 19 (1.4) | 7 (1.5) | 1.1; 0.4-2.8 | 4 (1.9) | 0.7; 0.3-2.3 |
| Bleeding during pregnancy | 78 (5.9) | 47 (10.0) | 1.7; 1.2-2.5* | 14 (6.6) | 1.1; 0.6-2.0 |
| Amniotic fluid disorders1 | 29 (2.2) | 20 (4.2) | 1.9; 1.1-3.5* | 7 (3.3) | 1.5; 0.6-3.5 |
Data presented as n (%).
1Includes both polyhydramnions and oligohydramnios.
2Unadjusted odds ratios refers to comparisons between normal weight and overweight.
3Unadjusted odds ratios refers to comparisons between normal weight and obese.
*p < 0.05; **p < 0.001.