Wheeze (n=97) |
Controls (n=208) |
Wheeze + asthma (n=23) |
Wheeze + cough/phlegm (n=28) | Atopy positive (n=154) | Atopy negative (n=129) | |
Number of older siblings | ||||||
0 | 34 (35.0%) | 71 (34.1%) | 7 (30.4%) | 10 (35.7%) | 59 (38.4%) | 41 (31.8%) |
1 | 28 (28.9%) | 62 (39.8%) | 8 (34.8%) | 9 (32.1%) | 43 (27.9%) | 37 (28.7%) |
2 | 20 (20.6%) | 42 (20.2%) | 5 (21.7%) | 4 (14.3%) | 29 (18.8%) | 29 (22.5%) |
3 or more | 15 (15.5%) | 33 (15.9%) | 3 (13.1%) | 5 (17.9%) | 23 (14.9%) | 22 (17.0%) |
Number of younger siblings | ||||||
0 | 36 (37.1%) | 83 (40.0%) | 12 (52.2%) | 8 (28.6%) | 57 (37.0%) | 54 (41.8%) |
1 | 35 (36.1%) | 67 (32.2%) | 9 (39.1%) | 8 (28.6%) | 46 (29.9%) | 49 (38.0%) |
2 | 15 (15.5%) | 34 (16.3%) | 2 (8.7%) | 6 (21.4%) | 32 (20.8%) | 12 (9.3%) |
3 or more | 11 (11.3%) | 24 (11.5%) | 0 (0%) | 6 (21.4%) | 19 (12.3%) | 14 (10.9%)1-150 |
Total number of siblings | ||||||
0 | 8 (8.3%) | 17 (8.2%) | 4 (17.4%) | 1 (3.6%) | 13 (8.4%) | 11 (8.5%) |
1 | 28 (28.9%) | 52 (25.0%) | 7 (30.4%) | 6 (21.4%) | 38 (24.7%) | 34 (26.4%) |
2 | 19 (19.6%) | 55 (26.4%) | 6 (26.2%) | 6 (21.4%) | 39 (25.3%) | 32 (24.8%) |
3 | 21 (21.6%) | 45 (21.6%) | 3 (13.0%) | 8 (28.6%) | 32 (20.8%) | 30 (23.2%) |
4 or more | 21 (21.6%) | 39 (18.8%) | 3 (13.0%) | 7 (25.0%) | 32 (20.8%) | 22 (17.1%) |
↵1-150 p⩽0.05 (χ2 tests of independence).