Table 3.
True and false ripple on spike detector sensitivity, specificity, precision i.e. positive predictive value (PPV), and negative predictive value (NPV) for differentiating the two event types in the 12 study patients in a blinded review by two experts conducted without spectrogram display.
| Patient ID | Accuracy | Sensitivity | Specificity | Precision (PPV) | nPV | Kappa | K. err |
|---|---|---|---|---|---|---|---|
| 448 (n = 50) | 0.78/0.72 | 0.72/0.75 | 0.84/0.64 | 0.82/0.69 | 0.75/0.76 | −0.14 | 0.14 |
| 449 (n = 62) | 0.71/0.58 | 0.97/0.52 | 0.45/0.65 | 0.64/0.59 | 0.94/0.57 | 0.03 | 0.12 |
| 451 (n = 272) | 0.82/0.66 | 0.89/0.94 | 0.74/0.38 | 0.78/0.6 | 0.87/0.87 | 0.07 | 0.07 |
| 453 (n = 86) | 0.71/0.57 | 0.84/0.74 | 0.58/0.4 | 0.67/0.55 | 0.78/0.61 | −0.12 | 0.12 |
| 454 (n = 210) | 0.74/0.74 | 0.71/0.85 | 0.76/0.63 | 0.75/0.70 | 0.73/0.81 | 0.08 | 0.07 |
| 456 (n = 192) | 0.71/0.65 | 0.82/0.79 | 0.60/0.50 | 0.68/0.61 | 0.77/0.71 | −0.10 | 0.08 |
| 463 (n = 116) | 0.57/0.62 | 0.60/0.66 | 0.53/0.59 | 0.57/0.61 | 0.57/0.63 | −0.12 | 0.09 |
| 467 (n = 108) | 0.80/0.71 | 0.78/0.70 | 0.82/0.72 | 0.81/0.72 | 0.79/0.71 | 0.07 | 0.10 |
| 470 (n = 72) | 0.61/0.63 | 0.67/0.81 | 0.56/0.44 | 0.60/0.59 | 0.63/0.70 | −0.04 | 0.12 |
| 472 (n = 36) | 0.56/0.50 | 0.50/0.44 | 0.61/0.56 | 0.56/0.50 | 0.55/0.50 | −0.08 | 0.17 |
| 473 (n = 72) | 0.71/0.67 | 0.58/0.75 | 0.83/0.58 | 0.78/0.64 | 0.67/0.70 | 0.25 | 0.11 |
| 474 (n = 94) | 0.82/0.72 | 0.89/0.89 | 0.89/0.55 | 0.78/0.67 | 0.88/0.84 | 0.02 | 0.11 |
| All Patients (n = 1370) | 0.73/0.66 | 0.75/0.74 | 0.67/0.55 | 0.70/0.62 | 0.74/0.70 | 0.01 | 0.03 |