Performance of the questionnaire+SPT model in the derivation and validation set
| No risk factors | 1–2 Risk factors | 3–4 Risk factors | ≥5 Risk factors | |
|---|---|---|---|---|
| Sensitisation rate derivation set (n=472): | ||||
| Observed (n/N (%)) | 2/64 (3) | 32/249 (13) | 56/108 (52) | 39/51 (77) |
| Predicted (% (SD)) | 4 (0) | 13 (8) | 47 (17) | 83 (9) |
| Sensitisation rate validation set (n=79): | ||||
| Observed (n/N (%)) | 2/15 (13) | 8/44 (18) | 5/14 (36) | 4/6 (67) |
| Predicted (% (SD)) | 4 (0) | 13 (8) | 45 (16) | 84 (2) |