Correction to: BMC Pregnancy Childbirth 20, 382 (2020)

https://doi.org/10.1186/s12884-020-03060-1

Following publication of the original article [1], the authors identified an error in Fig. 3. The correct figure is given below.

Fig. 3
figure 1

Subgroup analysis: Significant outcomes in trials where balloon catheters were used in both arms. [COPRA, Comparison of Inpatient with outpatient Balloon Catheter Cervical Ripening]