Sensitivity, specificity, positive predictive value, and negative predictive value of cognitive tests*
| Focal lesion (n = 46) | Controls (n = 19) | Sensitivity (95% CI) | Specificity (95% CI) | PPV (95% CI) | NPV (95% CI) | |||
|---|---|---|---|---|---|---|---|---|
| Pos | Neg | Pos | Neg | |||||
| *Some of these tests could not be done in all subjects because English was not their first language. | ||||||||
| CI, confidence interval; Neg, test negative; NPV, negative predictive value; Pos, test positive; PPV, positive predictive value. | ||||||||
| Construction | 14 | 32 | 2 | 17 | 0.30 (0.19 to 0.45) | 0.89 (0.69 to 0.97) | 0.88 (0.64 to 0.97) | 0.35 (0.23 to 0.49) |
| Naming | 9 | 35 | 0 | 17 | 0.20 (0.11 to 0.35) | 1.00 (0.82 to 1.00) | 1.00 (0.70 to 1.00) | 0.33 (0.22 to 0.46) |
| Calculation | 8 | 38 | 1 | 18 | 0.17 (0.09 to 0.31) | 0.95 (0.75 to 0.99) | 0.89 (0.57 to 0.98) | 0.32 (0.21 to 0.45) |
| Repetition | 7 | 37 | 2 | 15 | 0.16 (0.08 to 0.29) | 0.88 (0.66 to 0.97) | 0.78 (0.45 to 0.94) | 0.29 (0.18 to 0.42) |
| Finger naming | 7 | 39 | 1 | 18 | 0.15 (0.08 to 0.28) | 0.95 (0.75 to 0.99) | 0.88 (0.53 to 0.98) | 0.32 (0.21 to 0.44) |
| Auditory comprehension | 4 | 41 | 0 | 18 | 0.09 (0.04 to 0.21) | 1.00 (0.82 to 1.00) | 1.00 (0.51 to 1.00) | 0.31 (0.20 to 0.43) |
| Reading | 4 | 41 | 0 | 18 | 0.09 (0.04 to 0.21) | 1.00 (0.82 to 1.00) | 1.00 (0.51 to 1.00) | 0.31 (0.20 to 0.43) |
| Writing | 4 | 41 | 0 | 18 | 0.09 (0.04 to 0.21) | 1.00 (0.82 to 1.00) | 1.00 (0.51 to 1.00) | 0.31 (0.20 to 0.43) |
| Right–left discrimination | 2 | 44 | 0 | 19 | 0.04 (0.01 to 0.15) | 1.00 (0.83 to 1.00) | 1.00 (0.34 to 1.00) | 0.30 (0.20 to 0.42) |