Fig. 3From: Airborne protein concentration: a key metric for type 1 allergy risk assessment—in home measurement challenges and considerationsComparison of measurable (above the LoD) mite allergen airborne concentrations in the lounges of rural and urban homes (Respective rural and urban sample sizes (n) were 4 and 2 for Der p1). Statistical analysis (T-test unpaired 2 t-tailed) comparing rural and urban measurable values P = 0.042. ND = not detected above the LODBack to article page