Statistical Analysis
Statistical analysis was done using SPSS version 26. Descriptive data for the proportions and percentages were calculated for categorical variables. Association between nasal endoscopic features and rhinitis with or without PND groups was analyzed using the Chi-Square test and Kendall’s tau b. Mean VAS was compared using the T-Test. The interrater reliability for endoscopic scores was analyzed by Cohen’s kappa and for RFS was analyzed using intraclass correlation. A P-value of <0.05 was considered statistically significant. The sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), likelihood ratio positive (LR+) and likelihood ratio negative (LR-) was calculated for endoscopic features which proved to have an association with PND.
RESULTS
There were 98 participants, of which 61.2% were female with a mean age of 32.32±11.33 years. Among these rhinitis patients, 81.6% were diagnosed to have allergic rhinitis, 56.1% had persistent rhinitis, 74.5 % reported rhinitis to disturb their sleep and daily activity and 39.8 % had rhinitis symptoms for more than 10 years. The overall VAS for rhinitis is 57.8±27.11. Among the participants, 28.6% were diagnosed to have asthma by another practitioner and 7.1% were using intranasal steroids.