Outcome measures | Screening stage | Remedial period | Observation period | |||
---|---|---|---|---|---|---|
Baseline | Day 7 | Day 14 | Day 21 | Day 28 | Day 56 | |
Nasal symptoms | X | X | X | X | X | X |
Allergy symptom score | X | X | X | X | X | X |
Visual analog scale score | X | X | X | X | X | X |
Rhinoconjunctivitis Quality of Life Questionnaire | X | X | X | X | X | X |
Epworth Sleepiness Scale score | X | X | X | X | X | X |
Tolerability of the air purifier | X | X | X | X | ||
Treatment compliance | X | X | X | X | ||
Safety assessment | X | X | X | X | X |