Table 3. Total symptom score values V1 and V3 at the 60-minute time point are used as base of operation to determine the improvement rate in percentage. The p-value was calculated applying a t-test. „Improvement“ in the table means fewer symptoms using Respiray Wear A+ in comparison to symptom severity without a filter.

Allergen	Mean value baseline (V1)	Mean value – with filter (V3)	Improvement rate (%)	p-value
Birch	4.78	2.43	49	0.01149
House dust mite	6.92	3.59	48	0.00236
Cat	7.44	2.95	60	0.00308