| Phenotype | Physician-diagnosed asthma | Atopy (any skin prick sensitivity) | Skin prick sensitivity to D pteronyssinus* | Skin prick sensitivity to cat* | Skin prick sensitivity to grass* | |||||
| n/total (%) | OR (95% CI) | n/total (%) | OR (95% CI) | n/total (%) | OR (95% CI) | n/total (%) | OR (95% CI) | n/total (%) | OR (95% CI) | |
| Transient early | 79/931 (8.5%) | 2.46 (1.48 to 4.09) | 95/700 (13.6%) | 0.8 (0.55 to 1.17) | 52/707 (7.4%) | 0.84 (0.51 to 1.38) | 22/702 (3.1%) | 0.86 (0.42 to 1.77) | 52/706 (7.4%) | 0.80 (0.48 to 1.32) |
| Prolonged early | 183/509 (36.0%) | 14.87 (10.68 to 20.71) | 57/383 (14.9%) | 0.89 (0.58 to 1.38) | 32/387 (8.3%) | 0.99 (0.56 to 1.72) | 11/384 (2.9%) | 0.77 (0.27 to 2.2) | 25/386 (6.5%) | 0.69 (0.36 to 1.35) |
| Intermediate | 141/152 (92.8%) | 325.75 (137.78 to 770.14) | 71/114 (62.3%) | 8.36 (5.24 to 13.36) | 59/116 (50.9%) | 11.12 (7.06 to 17.53) | 42/115 (36.5%) | 15.51 (9.45 to 25.46) | 37/115 (32.2%) | 4.83 (2.98 to 7.82) |
| Late | 260/341 (76.2%) | 84.60 (56.00 to 127.8) | 145/257 (56.4%) | 6.62 (4.67 to 9.39) | 93/259 (35.9%) | 5.97 (4.13 to 8.63) | 69/257 (26.8%) | 9.73 (6.32 to 14.98) | 101/259 (39.0%) | 6.54 (4.57 to 9.35) |
| Persistent | 362/393 (92.1%) | 307.93 (185.86 to 510.18) | 123/296 (41.6%) | 3.64 (2.76 to 4.81) | 91/299 (30.4%) | 4.66 (3.42 to 6.36) | 66/296 (22.3%) | 7.54 (5.17 to 11) | 73/298 (24.5%) | 3.27 (2.37 to 4.53) |
| Never/infrequent | 126/3397 (3.7% | 1 (reference) | 419/2554 (16.4%) | 1 (reference) | 219/2580 (8.5%) | 1 (reference) | 92/2560 (3.6%) | 1 (reference) | 232/2575 (9.0%) | 1 (reference) |
*Mean weal diameter ⩾2 mm. CI, confidence interval; OR, odds ratio.