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Table 3 Labour events and outcomes of women in the two groups

From: Association between epidural analgesia and indications for intrapartum caesarean delivery in group 1 of the 10-group classification system at a tertiary maternity hospital, Shanghai, China: a retrospective cohort study

Variables Use of EA
(n = 1722)
No use of EA
(n = 1154)
P value
Intrapartum CD 275 (16.0) 308 (26.7) < 0.001*
Assisted vaginal delivery 167 (9.7) 99 (8.6) 0.310
Length of first stage of labour (min) 629 ± 208 582 ± 246 0.076
Length of second stage of labour (min) 40.2 ± 27.1 37.4 ± 23.6 0.216
PROM 573 (33.3) 405 (35.1) 0.313
Augmentation with amniotomy 919 (53.4) 488 (42.3) < 0.001*
Augmentation with oxytocin 1369 (79.5) 773 (67.0) < 0.001*
Intrapartum fever (> 38 °C) 401 (23.3) 98 (8.5) < 0.001*
VAS pain score (mm)
 Baseline 80.5 [77, 90] 78.7 [70, 83] 0.342
 1 h after EA 20.9 [10, 30]
 2 h after EA 33.5 [20, 50]
 3 h after EA 39.8 [30, 50]
Satisfaction score of EA (mm) 90 [87.5, 100]
Blood loss (ml) 300 [300, 375] 300 [300, 300] 0.395
Hospital stays (d) 5 [4, 6] 5 [4, 6] 0.238
Birthweight (g)
  < 2500 5 (0.3) 7 (0.6) 0.462
 2500–4000 1605 (93.2) 1064 (92.2)
  ≥ 4000 112 (6.5) 82 (7.1)
Apgar < 7 at 1 min 29 (1.7) 12 (1.0) 0.153
Apgar < 7 at 5 min 6 (0.4) 3 (0.3) 0.677
Cervical dilation at the time of intrapartum CD (cm) (n = 275) (n = 308)  
  ≤ 2 23 (8.4) 275 (89.3) < 0.001*
 3–4 175 (63.6) 30 (9.7)
  ≥ 5 77 (28.0) 3 (1.0)
  1. Data were presented as mean ± standard deviation, n (%), or median [interquartile range]
  2. Abbreviations: EA epidural analgesia, CD caesarean delivery, PROM premature rupture of membranes, VAS visual analogue scale
  3. *P value< 0.05