Table 1.
Characteristics of the development and validation datasets from the EHR allergy database
| Characteristics | Allergy Data |
||
|---|---|---|---|
| Development | Validation | Total | |
| Patients, n | 1 683 245 | 272 108 | 1 850 444 |
| Allergy entries, n | 3 743 553 | 490 774 | 4 234 327 |
| Active allergy entries, n (%) | 3 280 743 (87.6) | 475 583 (96.9) | 3 756 326 (88.7) |
| Allergy entries with free-text comments, n (%) | 1 535 657 (41.0) | 156 193 (31.8) | 1 691 850 (40.0) |
| Allergy entries with at least 1 reaction, n (%) | 2 171 548 (58.0) | 276 348 (56.3) | 2 448 538 (57.8) |
| Allergens before consolidation, n | 10 265 | 5968 | 11 181 |
| Allergens after consolidation, n | 6720 | 4818 | 7463 |
| Allergens after consolidation and have at least 1 associated reaction, n | 5553 | 3419 | 6127 |
| Unique reactions used after the refinement and reaction list reconciliation, n | 468 | 459 | 469 |