Table 1. Baseline clinical characteristics of subjects.
| Characteristics | Number of patients (%) | ||||
|---|---|---|---|---|---|
| All patients (n = 182) | 0–3 years (n = 49) | 4–6 years (n = 70) | 7–12 years (n = 63) | ||
| Sex (male) | 118 (64.8) | 32 (65.3) | 43 (61.4) | 43 (68.3) | |
| Age at diagnosis of food allergy | |||||
| < 3 | 163 (89.6) | 48 (98.0) | 64 (91.4) | 51 (81.0) | |
| ≥ 3 | 19 (10.4) | 1 (2.0) | 6 (8.6) | 12 (19.0) | |
| Offending food allergen | |||||
| Egg whites | 116 (63.7) | 30 (61.2) | 49 (70.0) | 37 (58.7) | |
| Cow’s milk | 90 (49.5) | 25 (51.0) | 34 (48.6) | 31 (49.2) | |
| Wheat | 67 (36.8) | 23 (46.9) | 27 (38.6) | 17 (27.0) | |
| Soybeans | 12 (6.6) | 5 (10.2) | 4 (5.7) | 3 (4.8) | |
| Peanuts | 30 (16.5) | 4 (8.2) | 14 (20.0) | 12 (19.0) | |
| Walnuts | 34 (18.7) | 6 (12.2) | 11 (15.7) | 17 (27.0) | |
| Number of restricted foods | |||||
| < 4 | 131 (72.0) | 40 (81.6) | 51 (72.9) | 40 (63.5) | |
| ≥ 4 | 51 (28.0) | 9 (18.4) | 19 (27.1) | 23 (36.5) | |
| Symptoms | |||||
| Mucocutaneous | 174 (95.6) | 48 (98.0) | 66 (94.3) | 60 (95.2) | |
| Gastrointestinal | 80 (44.0) | 20 (40.8) | 31 (44.3) | 29 (46.0) | |
| Respiratory | 81 (44.5) | 19 (38.8) | 37 (52.9) | 35 (39.7) | |
| Anaphylaxis | 113 (62.1) | 20 (40.8) | 56 (80.0) | 37 (58.7) | |
| Comorbid conditions | |||||
| Atopic dermatitis | 120 (65.9) | 35 (71.4) | 41 (58.6) | 44 (69.8) | |
| Allergic rhinitis | 71 (39.0) | 6 (12.2) | 25 (35.7) | 40 (63.5) | |
| Asthma | 31 (17.0) | 2 (4.1) | 12 (17.1) | 17 (27.0) | |
| Family history of allergic diseases | 105 (57.7) | 33 (67.3) | 42 (60.0) | 30 (47.6) | |
| Residential area | |||||
| Seoul, Gyeonggi-do, and Incheon | 95 (52.2) | 22 (44.9) | 32 (45.7) | 41 (65.1) | |
| Others* | 87 (47.8) | 27 (55.1) | 38 (54.3) | 22 (34.9) | |
Data are presented as numbers (%).
*Other stands for areas excluding Seoul, Gyeonggi-do, and Incheon: i.e., Gangwon-do, Chungcheongnam-do, Chungcheongbuk-do, Jeollanam-do, Jeollabuk-do, Gyeongsangnam-do, Gyeongsangbuk-do, Jeju, Sejong city, Busan, Ulsan, Daegu, and Daejeon.