Scores for the SF-12 PCS and MCS were compared for MVD and PSR groups using Mann-Whitney U tests. For the HADS, MVD and PSR groups were compared for the numbers of patients with borderline levels or case levels of anxiety or depression using χ2 tests. Where demographic factors were significantly different between groups, their effect on the SF-12 and HADS within each group was determined using Mann-Whitney U tests and χ2 or Fisher’s exact tests respectively. The numbers of patients with postoperative complications, and their severity and impact on quality of life, were compared using χ2 tests. Patients with surgery prior to MVD were separated from the cohort and their results reported separately.
All data were managed using Microsoft Excel 2016 (Microsoft, Redmond, VA, USA). Statistical analyses were performed using IBM SPSS Statistics for Macintosh, Version 24.0 (IBM, Armond, NY, USA). Mean values are reported with 95% confidence intervals (95% CI), and median values are reported with interquartile ranges (IQRs). For all statistics, p values less than or equal to 0.05 were considered statistically significant. Graphs were drawn using Prism for Macintosh, Version 7 (GraphPad Software, San Diego, CA, USA).
All data were managed using Microsoft Excel 2016 (Microsoft, Redmond, VA, USA). Statistical analyses were performed using IBM SPSS Statistics for Macintosh, Version 24.0 (IBM, Armond, NY, USA). Mean values are reported with 95% confidence intervals (95% CI), and median values are reported with interquartile ranges (IQRs). For all statistics, p values less than or equal to 0.05 were considered statistically significant. Graphs were drawn using Prism for Macintosh, Version 7 (GraphPad Software, San Diego, CA, USA).