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Fig. 2 | BMC Pregnancy and Childbirth

Fig. 2

From: Maternal obesity and its effect on labour duration in nulliparous women: a retrospective observational cohort study

Fig. 2

Survival plot as a function of time from onset of active labour until vaginal delivery. Event was defined as delivery. Women were censored at the time of caesarean delivery. Adjustments were made for maternal age, height, birth weight, labour induction, augmentation with oxytocin, and epidural analgesia. A hazard ratio (HR) >1 illustrates a shorter duration of labour while a HR <1 illustrates a longer duration of labour compared to the reference group consisting of normal-weight women

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