Chinese Nasal Congestion Questionnaire: It is based on the Nasal Obstruction Symptom Evaluation (NOSE) Scale using five questions to assess the nasal congestion.
Visual analog scale for nasal ventilation: Visual analogue scale (VAS) of nasal patency to subjectively feel the smoothness of nasal breathing on both sides.
Total nasal symptom score: the severity of four symptoms: runny nose, nasal congestion, sneezing, and itchy nose.
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