Areas under the receiver operating characteristic (ROC) curves for logistic regression and the growing cell structure (GCS) system for the test set of the normal versus CIIBD data set
| Logistic regression | GCS system | Human performance | ||||||
|---|---|---|---|---|---|---|---|---|
| All variables | Forward conditional | Backward conditional | BSG selected | All variables | BSG selected | Initial diagnosis | Observer diagnosis | |
| BSG, British Society of Gastroenterology; CIIBD, chronic idiopathic inflammatory bowel disease; N/A, not applicable; SE, standard error. | ||||||||
| Area under ROC curve | 0.8436 | 0.8680 | 0.8678 | 0.8775 | 0.8393 | 0.8532 | N/A | N/A |
| SE of area under ROC curve | 0.0245 | 0.0221 | 0.0221 | 0.0211 | 0.0230 | 0.0231 | N/A | N/A |
| Sensitivity for CIIBD | 78% | 79% | 80% | 80% | 76% | 77% | 84% | 82% |
| Specificity | 89% | 89% | 89% | 89% | 86% | 89% | 98% | 99% |