Figure 2.

Concentrations of indoor (a–b) Can f 1 and (c–d) Fel d 1 allergens by the reported presence of indoor pet dogs and cats, respectively, from (a,c) bed dust and (b,d) bedroom floor dust samples. Boxes represent the interquartile range (IQR) of allergen concentrations and black dashed lines within the IQR correspond to median concentration values. Whiskers signify the lowest and highest values within 1.5 times the interquartile range, solid dots indicate mean concentrations, and “x” symbols are outlier values. Medium and high clinically relevant thresholds are represented by orange and red reference lines, respectively: Can f 1: 2000 ng/g (med), 10,000 ng/g (high); and Fel d 1: 1000 ng/g (med), 8000 ng/g (high).