Reflective TNSS is an evaluation of symptom severity over the past 12 hours prior to the recording of the score. Participants (with assistance from parents/guardians/caregivers, as needed) assessed and recorded four nasal symptoms (runny nose, nasal congestion, nasal itching, and sneezing) twice daily (AM and PM) using the following scale:
- 0 = absent (no sign/symptom present)
- 1 = mild (sign/symptom clearly present, but minimal awareness; easily tolerated)
- 2 = moderate (definite awareness of sign/symptom that is bothersome but tolerable)
- 3 = severe (sign/symptom that is hard to tolerate; causes interference with activities of daily living and/or sleeping) The total TNSS scale was 0-12 with 0 representing an absence of symptoms and higher scores reflecting more severe symptoms.
Baseline was defined as the average AM and PM subject-reported rTNSS over the 4 days prior to randomization.