Abstract Background Induction of labour (IOL) is a common obstetric intervention. When planning IOL, especially in women at risk for complications at delivery, the aim should be for delivery to occur when senior staff are available to optimise safe care. Methods A change in timing of IOL protocol at our institution was introduced in November 2018 aiming to increase births occurring “in-hours” defined as 08:00 to 20:00 h. This retrospective cohort study compares the odds of “in-hours” birth before and after the intervention and the association on birth outcomes. The study compared outcomes during the new IOL pathway period to a historical birth cohort from January to December 2017. Inclusion criteria were nulliparous women undergoing planned IOL at term with a cephalic singleton pregnancy. Logistic regression was used to compare odds of in-hours birth for the 2 periods with adjustment for maternal age at delivery, gestation, more than 2 cervical ripening agents required, undergoing IOL for post-dates pregnancy, mode of birth, whether or not IOL proceeded according to planned protocol and missing values using multiple imputation. Results The rate of deliveries occurring in-hours were higher following the intervention; n = 118/285 (45.6%) pre-intervention versus n = 251/470 (53.4%) post-intervention; adjusted OR = 1.47, 95% CI = 1.07–2.01, p = 0.02). The percentage of caesarean sections (CS) occurring in-hours was significantly lower in the pre-intervention group n = 71/153 (28.3%) compared with the post intervention group = 35/132(46.4%) (p
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