aData are expressed as mean ± standard deviation.
bSCORing Atopic Dermatitis (SCORAD) index at enrollment.
cSeverity is categorized according to SCORAD at enrollment; ‘Mild’ indicates infants with SCORAD <25, ‘Moderate’ with 25≤ SCORAD <50), and ‘Severe’ with 50≤ SCORAD.
dSensitized to at least one of 5 common food allergens, including egg white, cow’s milk, soybean, wheat, and peanut.
eSensitized to house dust mite (Dermatophagoides pteronyssinus or D. farinae ).
fSensitized to pollen (at least one of pollen mixture allergens, including tree, grass, and weed)
gSensitized to pet (cat or dog allergens).
Table 2 Monthly PM10 levels exposed to the infants with atopic dermatitis during the study period from January 2007 to June 2020.