Data management and statistical analysis
The collected data were anonymised and stored on the secure hospital server. Statistical analysis was performed with SPSS version 27 (Armonk, NY). Comparisons between treatment approaches were analysed using the Chi-square test. The means for LOS and ages were compared using the Mann-Whitney U test. A univariate binary logistic regression analysis was carried out to investigate predictive factors (age, sex, combined ENT and neurosurgical intervention, size of collection, time to surgery, SDE).