| Sumario: | Background: Increased use of assisted reproduction technology has resulted in concerns about its impact on maternal and neonatal wellbeing. Aims: To evaluate the labour and birth outcomes in women who had and had not undertaken assisted conception and how the use of labour pain relief affected their outcomes Methods: Women who had and had not undertaken assisted conception were studied, and the effects of labour pain relief on labour and birth outcomes evaluated. Findings: The results showed that women who had undertaken assisted conception were more likely to have had epidural analgesia during labour. However, after adjusting for country of birth, body mass index (BMI), maternal age, model of care during pregnancy and gestational hypertension, this difference was not statistically significant. Regression analysis showed no differences between the groups in use of oxytocin, mode of birth, episiotomy or tear, postpartum blood loss, Apgar score at 5 minutes and neonatal complications at birth (<italic>P</italic>>0.05). Conclusions: These findings demonstrate the factors leading to poor outcomes in women who undertake assisted conception, and will help to reduce obstetric complications in this population.
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