Table 1 Demographic and clinical characteristics in acute bronchiolitis children with/without asthma
Before PSM Matching | p-value | After PSM Matching | p-value | |||
|---|---|---|---|---|---|---|
Without asthma | Asthma | Without asthma | Asthma | |||
N | 11,721 | 678 | 1,963 | 674 | ||
Gender (N, %)a | ||||||
 Female | 6,610(56.39%) | 430(63.42%) | <0.001 | 1,225(62.40%) | 428(63.50%) | 0.611 |
 Male | 5,111(43.61%) | 248(36.58%) | 738(37.60%) | 246(36.50%) | ||
Birth body weight (N, %)a | ||||||
 < 2500 g | 454(3.87%) | 43(6.34%) | 0.011 | 121(6.16%) | 43(6.38%) | 0.713 |
 ≧2500 g | 11,267(96.13%) | 635(93.66%) | 1,842(93.84%) | 631(93.62%) | ||
Gestational age (N, %)a | ||||||
 < 37 weeks | 116 (0.99%) | 3 (0.44%) | 0.515 | 29(1.47%) | 3(0.45%) | 0.184 |
 ≧ 37 weeks | 11,605 (99.01%) | 675(99.56%) | 1934(98.53%) | 671(99.55%) | ||
Asthma diagnosis age (Years, Means ± SD) | 4.06±1.17 | 4.17±1.28 | 0.031 | 4.11±1.20 | 4.17±1.28 | 0.253 |
Age acquired 1st bronchiolitis (Years, Means ±SD) | 0.97±0.51 | 1.10±0.53 | <0.001 | 1.11±0.52 | 1.10±0.53 | 0.647 |
Age acquired 1st bronchiolitis | ||||||
 < 1 year old (N, %) | 6,407(54.66%) | 297(43.81%) | <0.001 | 852(43.40%) | 297(44.07%) | 0.765 |
 1-2 years old (N, %) | 5,314(45.34%) | 381(56.19%) | 1,111(56.60%) | 377(55.93%) | ||
Hospitalization for acute bronchiolitis (N, %) | ||||||
 No | 8443(72.03%) | 387(57.08%) | <0.001 | 1,412(71.93%) | 386(57.27%) | <0.001 |
 Yes | 3278(27.97%) | 291(42.92%) | 551(28.07%) | 288(42.73%) | ||
Total IgE level | ||||||
 ≦100 IU/ml (N, %) | 770(49.52%) | 146(38.73%) | <0.001 | 188(44.87%) | 143(38.24%) | 0.059 |
 >100 IU/ml (N, %) | 785(50.48%) | 231(61.27%) | 231(55.13%) | 231(61.76%) | ||
Comorbidity (N, %)a | ||||||
 Allergic rhinitis | 1,162(9.91%) | 303(44.69%) | <0.001a | 840(42.79%) | 299(44.36%) | 0.478 |
 Atopic dermatitis | 1,178(10.05%) | 121(17.85%) | <0.001a | 306(15.59%) | 120(17.80%) | 0.178 |
 Chronic sinusitis | 35( 0.30%) | 16(2.36%) | <0.001a | 23( 2.36%) | 12(1.78%) | 0.234 |