| Singleton delivery | Multiple delivery | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
NC (N = 1491) | OS (N = 272) | HRT (N = 1234) | aOR (95%CI)a | aOR (95%CI)a | NC (N = 430) | OS (N = 88) | HRT (N = 349) | aOR (95%CI)a | aOR (95%CI)a | |
No. (%) | No. (%) | No. (%) | OS vs.NC | HRT vs. NC | No. (%) | No. (%) | No. (%) | OS vs.NC | HRT vs. NC | |
Gestational diabetes mellitus | ||||||||||
 No | 1351 (90.61) | 237 (87.13) | 1110 (89.95) | Reference | Reference | 383 (89.07) | 75 (85.23) | 323 (92.82) | Reference | Reference |
 Yes | 140 (9.39) | 35 (12.87) | 124 (10.05) | 1.44 (0.97–2.16) | 1.07 (0.82–1.40) | 47 (10.93) | 13 (14.77) | 25 (7.18) | 1.38 (0.70–2.71) | 0.63 (0.37–1.06) |
Hypertensive disorder | ||||||||||
 No | 1301 (87.26) | 216 (79.41) | 998 (80.88) | Reference | Reference | 361 (83.95) | 66 (75.00) | 243 (69.63) | Reference | Reference |
 Gestational hypertension | 91 (6.10) | 20 (7.35) | 90 (7.29) | 1.34 (0.80–2.26) | 1.31 (0.96–1.79) | 30 (6.98) | 7 (7.95) | 41 (11.75) | 1.38 (0.58–3.32) | 1.99 (1.19–3.32) |
 Preeclampsia | 99 (6.64) | 36 (13.24) | 146 (11.83) | 2.24 (1.48–3.38) | 1.88 (1.43–2.48) | 39 (9.07) | 19 (21.59) | 65 (18.62) | 2.91 (1.56–5.41) | 2.43 (1.56–3.78) |
Intrahepatic cholestasis of pregnancy | ||||||||||
 No | 1433 (96.11) | 253 (93.01) | 1152 (93.35) | Reference | Reference | 414 (96.28) | 80 (90.91) | 319 (91.40) | Reference | Reference |
 Yes | 58 (3.89) | 19 (6.99) | 82 (6.65) | 2.09 (1.21–3.59) | 1.85 (1.29–2.63) | 16 (3.72) | 8 (9.09) | 30 (8.60) | 2.62 (1.07–6.38) | 2.37 (1.25–4.48) |
Meconium staining of the amniotic fluid | ||||||||||
 No | 1274 (85.45) | 225 (82.72) | 1012 (82.01) | Reference | Reference | 372 (86.51) | 76 (86.36) | 299 (85.67) | Reference | Reference |
 Yes | 217 (14.55) | 47 (17.28) | 222 (17.99) | 1.27 (0.90–1.80) | 1.31 (1.06–1.61) | 58 (13.49) | 12 (13.64) | 50 (14.33) | 1.07 (0.54–2.11) | 1.07 (0.70–1.63) |
Preterm birth | ||||||||||
 No | 1310 (87.86) | 251 (92.28) | 1064 (86.22) | Reference | Reference | 210 (48.84) | 38 (43.18) | 150 (42.98) | Reference | Reference |
 Preterm | 181 (12.14) | 21 (7.72) | 170 (13.78) | 0.63 (0.39–1.02) | 1.21 (0.95–1.53) | 220 (51.16) | 50 (56.82) | 199 (57.02) | 1.32 (0.82–2.11) | 1.27 (0.95–1.70) |
Mode of delivery | ||||||||||
 Vaginal | 665 (44.60) | 109 (40.07) | 480 (38.90) | Reference | Reference | 17 (3.95) | 4 (4.55) | 13 (3.72) | Reference | Reference |
 Cesarean section | 826 (55.40) | 163 (59.93) | 754 (61.10) | 1.15 (0.88–1.50) | 1.24 (0.96–1.45) | 413 (96.05) | 84 (95.45) | 336 (96.28) | 0.93 (0.30–2.88) | 1.15 (0.54–2.47) |