Descriptive statistics
A total of 510 children with AR (352 male [69%]; mean age [±
SD] 10.5 [±3.1] years) were recruited in this study. Of these, 117
(22.9%) had mild intermittent, 92 (18.0%) mild persistent, 63 (12.4%)
moderate-severe intermittent, and 238 (46.7%) moderate-severe
persistent AR. 205 children (40% of study population; 35 female and 180
male patients; 9.8 ± 2.9 years) had asthma. Table 1 summarizes the
demographic and clinical characteristics of all participants, and among
those with and without coexisting asthma. Persistent (52 vs. 73%,
p<0.001) and moderate-severe AR (48 vs. 67%,
p<0.001), coexisting conjunctivitis (71 vs. 80%, p=0.012) and
grass pollen sensitization (81 vs. 90%, p=0.005) were more frequent in
children without asthma, whereas house dust mite (26.8 % vs. 17.4 %,
p=0.01) and mold sensitizations (13% vs. 5%, p=0.001) were more common
(13.2 % vs. 4.9 %, p=0.001) in those with asthma.
All measures of lung function were significantly lower among children
with asthma (Table 1).