Table 2. Unadjusted association between BMI and adverse perinatal outcomes.
| Parameter | <18.50 (REF) | 18.50–24.99 | OR (95%CI) | P value | ≥25.00 | OR (95%CI) | P value |
|---|---|---|---|---|---|---|---|
| (n = 2485) | (n = 1033) | (n = 444) | |||||
| GDM(%) | 99/2485(3.98) | 83/1033(8.03) | 2.11(1.56–2.85) | <0.001 | 44/444(9.91) | 2.65(1.83–3.84) | <0.001 |
| HDP(%) | 84/2485(3.38) | 47/1033(4.55) | 1.36(0.95–1.96) | 0.096 | 51/444(11.49) | 3.71(2.58–5.34) | <0.001 |
| Preeclampsia(%) | 13/2485(0.52) | 7/1033(0.68) | 1.30(0.52–3.26) | 0.58 | 9/444(2.03) | 3.93(1.67–9.26) | 0.002 |
| Polydydramnios(%) | 29/2485(1.17) | 21/1033(2.03) | 1.76(1.00–3.10) | 0.051 | 13/444(2.93) | 2.55(1.32–4.95) | 0.006 |
| Oligodydramnios(%) | 144/2485(5.79) | 59/1033(5.71) | 0.99(0.72–1.35) | 0.923 | 24/444(5.41) | 0.93(0.60–1.45) | 0.745 |
| PPPOM(% | 34/2485(1.37) | 23/1033(2.23) | 1.64(0.96–2.80) | 0.069 | 12/444(2.70) | 2.00(1.03–3.90) | 0.041 |
| PP(%) | 85/2485(3.42) | 27/1033(2.61) | 0.76(0.49–1.18) | 0.216 | 12/444(2.70) | 0.78(0.43–1.45) | 0.437 |
| Placental abruption(%) | 76/2485(3.06) | 5/1033(0.48) | 2.01(0.61–6.60) | 0.25 | 5/444(1.13) | 4.71(1.43–15.49) | 0.011 |
| PTB<32weeks(%) | 24/2485(0.97) | 9/1033(0.87) | 0.90(0.42–1.95) | 0.791 | 7/444(1.58) | 1.64(0.70–3.84) | 0.251 |
| PTB<37weeks (%) | 159/2485(6.40) | 80/1033(7.74) | 1.23(0.93–1.62) | 0.149 | 49/444(11.04) | 1.82(1.30–2.54) | 0.001 |
| CS(%) | 1889/2485(76.02) | 866/1033(83.83) | 1.63(1.35–1.97) | <0.001 | 385/444(86.71) | 2.06(1.54–2.74) | <0.001 |
| PPH(%) | 36/2485(1.45) | 14/1033(1.36) | 0.94(0.50–1.74) | 0.831 | 3/444(0.68) | 0.46(0.14–1.51) | 0.201 |
| Fetal macrosomia(%) | 309/2485(12.43) | 198/1033(19.17) | 1.67(1.37–2.03) | 0.001 | 105/444(23.65) | 2.18(1.70–2.80) | <0.001 |
| Respiratory distress(%) | 12/2485(0.48) | 12/1033(1.16) | 1.81(0.76–4.31) | 0.179 | 7/444(1.54) | 3.30(1.29–8.43) | 0.013 |
| SGA(%) | 97/2485(3.90) | 24/1033(2.32) | 0.59(0.37–0.92) | 0.021 | 13/444(2.93) | 0.74(0.41–1.34) | 0.321 |
| LGA(%) | 432/2485(17.38) | 282/1033(27.30) | 1.78(1.50–2.12) | <0.001 | 146/444(32.88) | 2.33(1.86–2.91) | <0.001 |
| LBW<1,500g(%) | 8/2485(0.32) | 5/1033(0.48) | 1.51(0.49–4.61) | 0.474 | 5/444(1.13) | 3.53(1.15–10.83) | 0.028 |
| LBW<2,500g(%) | 91/2485(3.66) | 33/1033(3.19) | 0.87(0.58–1.30) | 0.494 | 18/444(4.05) | 1.11(0.66–1.86) | 0.688 |
| GA(w) | 39.2(38.3–40.0) | 39.1(38.2–40.0) | N#A | 0.701 | 39.0(38–39.6) | N#A | <0.001 |
| BW(g) | 3400(3150–3700) | 3560(3250–3893) | N#A | <0.001 | 3600(3200–3950) | N#A | <0.001 |
| BH(cm) | 50(50–51) | 50(50–51) | N#A | 0.156 | 50(50–51) | N#A | 0.004 |
| NICU admission(%) | 156/2485(6.28) | 94/1033(9.10) | 1.50(1.14–1.95) | 0.003 | 52/444(11.71) | 1.98(1.42–2.76) | <0.001 |
| Congenital anomalies(%) | 94/2485(3.78) | 41/1033(3.97) | 1.05(0.72–1.53) | 0.793 | 29/444(6.53) | 1.78(1.16–2.73) | 0.009 |
| Mortality(%) | 12/2485(0.48) | 5/1033(0.48) | 1.00(0.35–2.85) | 0.996 | 3/444(0.68) | 1.40(0.39–4.99 | 0.602 |