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Table 4 Multivariable linear regression of factors associated with duration of total stage of labour

From: Pregnant women’s clinical characteristics, intrapartum interventions, and duration of labour in urban China: a multi-center cross-sectional study

Variables βa 95%CI t Test P value
Age 0.01 (−0.01, 0.02) 0.98 0.328
Epidural analgesiab 0.85 (0.73, 0.96) 15.63 < 0.001
Parityc −0.54 (−0.62, -0.37) −7.84 < 0.001
Continuous EFMb 0.12 (0.02, 0.23) 2.11 0.035
Amniotomyb 0.09 (−0.03, 0.21) 1.49 0.136
Birth weight 0.20 (0.06, 0.34) 2.81 0.005
  1. EFM Electronic fetal monitoring; CI Confidence interval;
  2. aDue to skewness of the distribution of labour duration, data was z-transformed before analysed using multivariable linear regression; bBinary variable (yes = 1, no = 0); cBinary variable (nullipara = 0, multipara = 1)