Table 2.
The incidence of adverse pregnant outcomes under the standard of 2009 IOM guideline.
| Prepregnancy BMI category | No.(%) | Cesarean section | Preterm birth | SGA | LGA |
|---|---|---|---|---|---|
| Underweight (n=2522) | |||||
| Insufficient | 699(27.7%) | 146(20.9%)** | 69(9.9%)** | 69(9.9%)* | 54(7.7%)** |
| Adequate | 1303(51.7%) | 242(18.6%)** | 33(2.5%)** | 104(8%)* | 110(8.4%)** |
| Excessive | 520(20.6%) | 141(27.1%)** | 11(2.1%)** | 27(5.2%)* | 83(16%)** |
| Normal (n=14811) | |||||
| Insufficient | 4055(27.4%) | 1169(28.8%)** | 320(7.9%)** | 250(6.2%)** | 504(12.4%)** |
| Adequate | 6448(43.5%) | 1909(29.6%)** | 271(4.2%)** | 285(4.4%)** | 1028(15.9%)** |
| Excessive | 4308(29.1%) | 1558(36.2%)** | 130(3%)** | 182(4.2%)** | 941(21.8%)** |
| Overweight (n=2672) | |||||
| Insufficient | 365(13.7%) | 141(38.6%)* | 52(14.2%)** | 23(6.3%)* | 65(17.8%)** |
| Adequate | 891(33.3%) | 364(40.9%)* | 71(8%)** | 36(4%)* | 212(23.8%)** |
| Excessive | 1416(53%) | 671(47.4%)* | 93(6.6%)** | 37(2.6%)* | 431(30.4%)** |
| Obesity (n=588) | |||||
| Insufficient | 115(19.6%) | 51(44.3%)* | 23(20%)* | 5(4.3%) | 26(22.6%) |
| Adequate | 215(36.6%) | 110(51.2%)* | 18(8.4%)* | 7(3.3%) | 64(29.8%) |
| Excessive | 258(43.9%) | 154(59.7%)* | 22(8.5%)* | 9(3.5%) | 80(31%) |
GWG, gestational weight gain. BMI, body mass index. LBW, low birth weight. SGA, small for gestational age. LGA, large for gestational age.
*, p<0.05; **, p<0.001