Statistical analysis
Differences in demographic features, comorbidities and surgical/pathological features between the two complication groups were assessed using t-tests, chi squared test and Fisher’s exact tests as appropriate. Statistically significant results were defined as those with p value ≤ 0.05. Data was analysed with Stata v14 software (StataCorp).
Ethics approval for this database was granted by the Prince Charles Hospital Human Research Ethics Committee (Reference: HREC/17/QPCH/295).