Figure 5From: Encasing bedding in covers made of microfine fibers reduces exposure to house mite allergens and improves disease management in adult atopic asthmaticsLog Der p 1–specific IgE levels in patients in the intervention group before intervention (in 2009) and 1 year later (after intervention), and in the non-intervention group during the same test periods. Der p 1–specific IgE levels (UA/mL) were measured by using the CAP system (Pharmacia, Uppsala, Sweden). Mean values were compared by using the Wilcoxon matched-pairs T-test. A P value of <0.05 was considered statistically significant. * P < 0.05; †P < 0.01.Back to article page