Statistical Analysis
The R language was used to analyse the data.11,12Numerical data was analysed with the Shapiro-Wilk test for normality
distribution. The unpaired Two Sample T-test (w), reported as mean ±
standard deviation, or Mann-Whitney U-test (u), reported as median
[Interquartile Range (IQR)], was used depending on distribution.
Categorical data were analysed with Chi-squared test
(x2) or Fisher’s Exact Test (f). Odds ratio (OR) was
calculated to determine the degree of association between the type of
procedure and analgesia requirement. Sub-analysis based on the aim of
the procedure were also performed and analysed with the Kruskal Wallis
test. Significance value was set at p ≤ 0.05.