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Table 6 Outcomes by parity (multiparous)

From: Double- versus single-balloon catheters for labour induction and cervical ripening: a meta-analysis

Outcomes* Number of studies analysed Interventions Effect measure Pooled effect (95% CI) Q p-value I2- statistic p-value Sensitivity analysis
Double Single
caesarean delivery 2 [17,20] 95 91 RR 1.35 [0.54, 3.36] 0.43 0 0.52
insertion to delivery intervalA 2 [17,20] 95 91 MD −0.48 [−2.24, 1.28] 0.62 0 0.60
−1.05 [− 2.68, 0.58] 0.70 0 0.21
insertion to expulsion/removal interval 1 [17] 25 23 MD 2.30 [−0.97, 5.57] 0.17
Bishop score incrementC 1 [17] 25 23 MD 0.20 [−0.88, 1.28] 0.72
vaginal delivery within 24 h 2 [17,20] 95 91 RR 1.05 [0.93, 1.18] 0.21 36% 0.46
normal vaginal deliveryD 2 [17,20] 95 91 RR 0.92 [0.83, 1.02] 0.36 0 0.13
assisted vaginal deliveryD 1 [20] 70 68 RR 8.75 [0.48, 159.42] 0.14
analgesia usage 1 [20] 70 68 RR 1.20 [0.70, 2.07] 0.51
maternal adverse events (infection) 1 [20] 70 68 RR 2.92 [0.12, 70.35] 0.51
neonatal adverse events (low Apgar score)E 1 [20] 70 68 RR Not estimable§
  1. * Superscript notes (A-F) are the same as those for Table 4
  2. §: Reporting no events in both groups, which were inestimable