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Table 2 Symptom score definitions

From: Clinical validation of controlled exposure to birch pollen in the Environmental Exposure Unit (EEU)

Score Definition
0 = none Symptom is completely absent
1 = mild Symptom is present but minimal awareness, easily tolerated
2 = moderate Awareness of symptoms, bothersome, but tolerable and not interfering with daily activities
3 = severe Definite awareness of symptoms, difficult to tolerate, interferes with activities; and/or desires treatment
  1. Participants graded each symptom on a 3-point Likert scale (0–3) every 30 min. The total score was added up for a total out of 12 (TNSS) and 24 (TRSS)