Table 2 Obstetric history and pregnancy outcomes (n = 367)
| Â | PTB | Â | |||
|---|---|---|---|---|---|
YesPTB % N (%) Or mean +/−SD) | NoPTB N (%) or mean +/−SD) | Total N (%) or mean +/−SD) | Crude Odds Ratio (OR) (95% CI) | P-Value | |
Maternal parity (na = 366) | |||||
 Nullipara | 2(5.4) | 21(6.4) | 23(6.3) | 1 |  |
 Primipara | 13(35.1) | 107(32.5) | 120(32.8) | 0.87[0.19, 3.96] | 0.86 |
 Multipara | 22(59.5) | 201(61.1) | 223(60.9) | 1.11[0.52, 2.30] | 0.78 |
History of stillbirth(na = 366) | |||||
 No | 36(97.3) | 318(96.7) | 354(96.7) | 1 |  |
 Yes | 1(2.7) | 11(3.3) | 12(3.3) | 0.80[.10, 6.40] | 0.83 |
Previous miscarriage (na = 361) | |||||
 No | 30(85.7) | 279(85.6) | 309(85.6) | 1 |  |
 Yes | 5(14.3) | 47(14.4) | 52(14.4) | 1.011[.37, 2.73] | .0.93 |
Previous Caesarian Section (na = 351) | |||||
 No previous C. Section | 31(88.6) | 290(91.8) | 321(91.5) | 1 |  |
 Previous C. Section | 4(11.4) | 26(8.2) | 30(8.5) | 0.69[.23, 2.12] | 0.52 |
Previous Preterm Labor/ birth (na = 366) | |||||
 Yes | 7(18.9) | 53(16.1) | 60(16.4) | 1 |  |
 No | 30(81.1) | 276(83.9) | 306(83.6) | 0.82[.344, 1.97] | 0.66 |
Mode of delivery (n = 367) | |||||
 Caesarian section | 9(24.3) | 60(18.2) | 69(18.8) | 1 |  |
 Vaginal | 28(75.7) | 270(81.8) | 298(81.2) | 1.44[0.65, 3.22] | 0.36 |
Preterm delivery (< 37 weeks) (n = 367) | |||||
 Yes | – | – | 37(10.1) | – | – |
 No | – | – | 330(89.8) | – | – |
Preterm delivery (< 34 weeks) (n = 367) | |||||
 Yes | – | – | 12(3.3) | – | – |
 No | – | – | 355(96.7) | – | – |
Preterm delivery (34–36 weeks) | |||||
 Yes | – | – | 25(6.8) | – | – |
 No | – | – | 342(93.2) | – | – |
Gestational age at delivery (weeks) | 34 ± 2.63 | 39.33 ± 1.07 | 38.80 ± 2.07 | – | – |
Birth weight (grams) | 2167.30 ± 612.14 | 3270 ± 392.53 | 3159.47 ± 534.82 | – | – |
Birth weight (all) (n = 367) | |||||
  < 2500 g | 22(59.5) | 7(2.1) | 29(7.9) | – | – |
  ≥ 2500 g | 15(40.5) | 323(97.9) | 338(92.1) | – | – |