3.6 Overall SNOT-22 Scores
All patients reported an increase in quality of life (QOL) measures following surgery using the SNOT-22 questionnaire (-23.2, p=0.018).20 Correlation using Pearson coefficients were calculated to analyze the relationship between the changes in SNOT-22 scores with both ETDQ-7 and NOSE. For all patients, improvement in SNOT-22 scores strongly correlated with ETDQ-7 changes (r=0.92, p=0.001). However, SNOT-22 scores correlated with ETDQ-7 in the case group (r=0.96, p=0.012), and not in the control group (r=0.43, p=0.72). ETDQ-7 also showed significant correlation to NOSE in all groups and cases (r=0.80, p=0.009; r=0.90, p=0.036), but not in the control group (r=0.37, p=0.63).