CPT score | N (%) | N (%) tests avoided | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) |
---|---|---|---|---|---|---|
>25.0 | 201 (39.5) | 386 (75.8) | 47.4 | 77.1 | 64.2 | 63.0 |
>20.0 | 264 (51.9) | 323 (63.5) | 61.0 | 68.9 | 62.9 | 67.2 |
>15.0 | 355 (69.7) | 232 (45.6) | 75.4 | 52.4 | 57.7 | 71.1 |
>10.0 | 421 (82.7) | 166 (32.6) | 84.6 | 39.4 | 54.6 | 74.7 |
>5.0 | 489 (96.1) | 98 (19.3) | 91.9 | 24.1 | 51.1 | 77.6 |