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Scatter plots with linear fitting curves presenting the correlations between symptom/SNOT-22 scores and scores of psychometric tests in benign and malignant groups separately. PHQ-9, Patient Health Questionnaire-9; GAD-7, Generalized Anxiety Disorder-7; ISI, Insomnia Severity Index; PHQ-15, Patient Health Questionnaire-15; SNOT-22, 22-item Sinonasal Outcome Test.
