Table 1. Triggers of 1,952 anaphylactic reactions.
| Age at onset, year, mean (range) | Total, Number (%) | Age groups | |||||
|---|---|---|---|---|---|---|---|
| 0-3 years n=21 |
4-9 years n=68 |
10-17 years n=336 |
18-50 years n=1,333 |
51-75 years n=194 |
|||
| Suspect triggers | 1,952 cases of anaphylaxis of all causes | ||||||
| Food | 30 (0.4-75) | 1,501 (77) | 21 | 61 | 282 | 1016 | 121 |
| Drug | 33 (4-61) | 143 (7) | 0 | 2 | 10 | 119 | 12 |
| Insect | 32 (21-45) | 14 (1) | 0 | 0 | 0 | 14 | 0 |
| Idiopathic | 36 (8-68) | 294 (15) | 0 | 5 | 44 | 184 | 61 |
| Food triggers | 1,501 cases of food-induced anaphylaxis | ||||||
| Cereals | 34 (3-70) | 622 (41) | 1 | 6 | 80 | 465 | 70 |
| Wheat | 35 (7-70) | 557 (37) | 0 | 3 | 56 | 429 | 69 |
| Other cereal | 65 (4) | 1 | 3 | 24 | 36 | 1 | |
| Fruits/vegetables | 25 (4-75) | 307 (20) | 1 | 36 | 59 | 203 | 8 |
| Tree nuts/seeds | 32 (2-70) | 107 (7) | 3 | 3 | 11 | 80 | 10 |
| Legume/peanut | 28 (4-59) | 75 (5) | 0 | 4 | 20 | 42 | 9 |
| Seafood | 30 (8-59) | 46 (3) | 0 | 2 | 6 | 35 | 3 |
| Milk | 5 (0.4-24) | 22 (1) | 13 | 3 | 5 | 1 | 0 |
| Spices | 31 (7-59) | 25 (1) | 0 | 3 | 4 | 15 | 3 |
| Other foods | 35 (2) | 3 | 0 | 7 | 21 | 4 | |
| Mix foods | 28 (4-65) | 93 (6) | 0 | 2 | 21 | 63 | 7 |
| Unclear | 24 (4-67) | 169 (12) | 0 | 2 | 69 | 91 | 7 |
| Drug triggers | 143 cases of drug-induced anaphylaxis | ||||||
| Herb | 31 (4-57) | 53 (37) | 0 | 1 | 4 | 46 | 2 |
| Antibiotic | 34 (12-58) | 35 (24) | 0 | 0 | 3 | 27 | 5 |
| NSAID | 42 (18-61) | 23 (16) | 0 | 0 | 0 | 18 | 5 |
| Immunotherapy | 29 (7-50) | 16 (11) | 0 | 1 | 3 | 12 | 0 |
| Other drugs | 16 (11) | 0 | 0 | 0 | 16 | 0 | |
NSAID, non-steroidal anti-inflammatory drug.