Table 1 Characteristics of study subjects.
From: Allergic diseases attributable to atopy in a population sample of Asian children
All subjects | Atopy | Non atopy | p | |
|---|---|---|---|---|
Age, years (mean ± SD) | 10.3 ± 2.7 | 10.3 ± 2.7 | 10.4 ± 2.7 | 0.625 |
Gender, male, n (%) | 644/1321 (48.8%) | 410/757 (54.2%) | 234/564 (41.5%) | < 0.001* |
Body mass index, kg/m2 (mean ± SD) | 18.7 ± 3.6 | 18.8 ± 3.7 | 18.5 ± 3.4 | 0.087 |
Body mass index category | 0.199 | |||
Underweight, n (%) | 107/1321 (8.1%) | 53/757 (7.0%) | 54/564 (9.6%) | |
Normal weight, n (%) | 858/1321 (65.0%) | 491/757 (64.9%) | 367/564 (65.1%) | |
Overweight, n (%) | 271/1321 (20.5%) | 158/757 (20.9%) | 113/564 (20.0%) | |
Obesity, n (%) | 85/1321 (6.4%) | 55/757 (7.3%) | 30/564 (5.3%) | |
Asthma, n (%) | 146/1304 (11.2%) | 113/743 (15.2%) | 33/561 (5.9%) | < 0.001* |
Rhinitis, n (%) | 487/1293 (37.7%) | 360/738 (48.8%) | 127/555 (22.9%) | < 0.001* |
Eczema, n (%) | 253/1297 (19.5%) | 188/741 (25.4%) | 65/556 (11.7%) | < 0.001* |
Parental allergic diseases, n (%) | 462/986 (46.9%) | 282/550 (51.3%) | 180/436 (41.3%) | 0.002* |
Paternal allergic diseases, n (%) | 319/972 (32.8%) | 192/542 (35.4%) | 127/430 (29.5%) | 0.052 |
Maternal allergic diseases, n (%) | 253/974 (26.0%) | 163/541 (30.1%) | 90/433 (20.8%) | 0.001* |
Household passive smoking, n (%) | 696/1284 (54.2%) | 402/736 (54.6%) | 294/548 (53.7%) | 0.730 |
Season of birth | 0.884 | |||
Spring, n (%) | 312/1321 (23.6%) | 183/757 (24.2%) | 129/564 (22.9%) | |
Summer, n (%) | 348/1321 (26.3%) | 194/757 (25.6%) | 154/564 (27.3%) | |
Autumn, n (%) | 349/1321 (26.4%) | 199/757 (26.3%) | 150/564 (26.6%) | |
Winter, n (%) | 312/1321 (23.6%) | 181/757 (23.9%) | 131/564 (23.2%) |
