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Table 3 Adverse outcomes in the first stage of labor in multiparous women (n = 7109)

From: The impact of stage of labor on adverse maternal and neonatal outcomes in multiparous women: a retrospective cohort study

  Duration of First stage of labor Linear trend X2 P
< 6 h 6–11.9 h 12–17.9 h 18–23.9 h ≥24 h
Overall outcomes 714(21.0) 588(23.4) 236(28.8) 81(35.5) 58(38.4) 57.64 < 0.001
Maternal outcomes 246(7.2) 221(8.8) 113(13.8) 46(20.2) 45(29.8) 121.38 < 0.001
 Referral cesarean delivery 28(0.8) 29(1.2) 20(2.4) 13(5.7) 8(5.3) 50.97 < 0.001
 Instrumental delivery 77(2.3) 72(2.9) 35(4.3) 12(5.3) 11(7.3) 23.46 < 0.001
 Postpartum hemorrhage 72(2.5) 53(2.5) 18(2.6) 9(4.7) 3(2.3) 0.73 0.393
 III and IV degree laceration 34(1.1) 23(1.0) 14(1.9) 4(2.0) 3(2.3) 3.76 0.053
 Length of stay ≥90th 100(2.9) 100(4.0) 67 (8.2) 31(13.6) 34(22.5) 160.81 < 0.001
Neonatal outcomes 543(16.0) 435(17.3) 158(19.3) 49(21.5) 28(18.5) 7.75 0.005
 NICU 184(5.4) 150(6.0) 54(6.6) 16(7.0) 7(4.6) 1.14 0.285
 Shoulder dystocia 76(2.3) 73(3.0) 20(2.5) 10(4.5) 6(4.1) 4.33 0.037
 Apgar ≤7(5 min) 24(0.7) 42(1.7) 15(1.8) 5(2.2) 3(2.0) 12.66 < 0.001
 Neonatal resuscitation 354(11.0) 287(12.2) 101(13.3) 31(15.3) 17(13.1) 5.77 0.016
 Assisted ventilation 72(2.2) 66(2.8) 31(4.1) 8(3.9) 4(2.7) 7.13 0.008
  1. Data was presented as n(%). Linear trend Chi-square test for categorical data