Statistical analyses
The primary analysis was by intention to treat, with a secondary
analysis consistent with the main paper as per-protocol. Post hocanalyses were conducted of maternal and neonatal cost subgroups and
after exclusion of outliers. The economic perspective taken is that of
the Australian public hospital system with total costs incurred by the
hospital. Differences in costs between the two arms are presented with
95% confidence intervals and evidence was considered statistically
significant if two-tailed P-values were < 0.05. All analyses
were conducted using [Stata/MP version 17.0] (13).