Statistical Analysis
Interpretation of data was performed using Prism 8 software (Graphpad,
CA, USA). Parametric or nonparametric tests were used as appropriate
following normality testing. Patient factors were assessed for
correlation with grade of view and complications using Spearman’s
correlation of multivariables.
Missing data relating to preoperatively determined patient factors was
retrospectively addressed using the Hospital electronic documentation
system where possible. Patients who were not questioned about their
symptoms in recovery (usually due to exceptionally efficient delivery
back to the postoperative ward for same day discharge) were telephoned
on the first postoperative day and asked about their symptoms
retrospectively – although this potentially introduced recall bias of
symptoms, this resulting in no patients being lost to follow-up.