Table 3 Sensitivity and specificity in relation to the number of items used to estimate persons' locations.
Criteria to stop the CAT | Sensitivity | Specificity | Area Under Curve |
|---|---|---|---|
Maximum no of items: 30 | 93% | 90% | 0.97 (0.96 - 0.98) |
Maximum no of items: 20 | 90% | 89% | 0.96 (0.95 - 0.97) |
Maximum no of items: 10 | 79% | 88% | 0.92 (0.90 - 0.94) |
Maximum no of items: 5 | 64% | 88% | 0.90 (0.84 - 0.89) |
Estimation of person location with 95% accuracy | 92% | 90% | 0.97 (0.96 - 0.98) |