Cost-effectiveness of term induction of labour using inpatient prostaglandin gel versus outpatient Foley catheter
- Publication Type:
- Journal Article
- Australian and New Zealand Journal of Obstetrics and Gynaecology, 2015, 55 (5), pp. 440 - 445
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© 2015 The Royal Australian and New Zealand College of Obstetricians and Gynaecologists. Objective Evaluating cost-effectiveness of induction of labour (IOL) using outpatient mechanical cervical ripening using a Foley catheter (OFC) compared to inpatient chemical ripening using prostin gel (IPG). Study Design Cost-effectiveness analysis from a hospital perspective alongside a RCT. Women in a metropolitan Australian maternity hospital with an unfavourable cervix requiring IOL at term were randomised to IPG (n = 51) or OFC (n = 50). Primary economic measures were mean patient costs, incremental cost per predelivery inpatient hour prevented, and incremental cost per vaginal delivery within 12 h of admission to the birthing unit. Bootstrapping estimates were used to construct 95% confidence intervals. Estimates of net monetary benefit were calculated to aid interpretation of the results. Results Mean hospital costs per woman were nonsignificantly higher ($6524 OFC vs $5876 IPG) and mean difference $643; 95% CI -$366 to $1652. OFC group experienced fewer predelivery inpatient hours, resulting in an incremental cost per inpatient hour prevented of $57 (95% CI -$79.44 to $190.65). However, OFC patients were less likely to deliver vaginally within 12 h of admission to birthing unit. Other cost influencing clinical outcomes, including caesarean section rates and total inpatient hours, were not statistically different. Results were not sensitive to changes in costs or the cost-effectiveness thresholds. Conclusion OFC had fewer inpatient hours and costs prior to birth. However, OFC did not reduce overall inpatient hours and failed to achieve comparable rates of vaginal delivery within 12 h of birthing unit admission. Therefore, OFC is unlikely to be considered cost-effective compared to IPG in current hospital settings.
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