Characteristics of patients by recruitment method
| Characteristic | No. (%) of patients*; method | ||
|---|---|---|---|
| Retrospective n = 802 | Prospective n = 588 | Total n = 1390 | |
| Sex | |||
| Male | 497 (62.0) | 367 (62.4) | 864 (62.2) |
| Female | 305 (38.0) | 221 (37.6) | 526 (37.8) |
| Age, median (IQR), yr | 5.8 (2.9–10.8) | 5.1 (2.2–11.0) | 5.4 (2.5–10.9) |
| History of asthma | |||
| Yes | 137 (17.1) | 94 (16.0) | 231 (16.6) |
| No | 660 (82.3) | 492 (83.6) | 1152 (82.9) |
| Information missing | ≤ 5 | ≤ 5 | 7 (0.5) |
| Known peanut allergy | |||
| Yes | 316 (39.4) | 213 (36.2) | 529 (38.1) |
| No | 481 (60.0) | 373 (63.4) | 854 (61.4) |
| Information missing | ≤ 5 | ≤ 5 | 7 (0.5) |
| Known tree nut allergy | |||
| Yes | 155 (19.3) | 87 (14.8) | 242 (17.4) |
| No | 642 (80.1) | 499 (84.8) | 1141 (82.1) |
| Information missing | ≤ 5 | ≤ 5 | 7 (0.5) |
Note: IQR = interquartile range.
↵* Except where noted otherwise.