Table 2.
Sensitivity, specificity, PPV, and NPV for ICD-9 codes for toxic maculopathy for identifying patients with hydroxychloroquine toxicity
| Value | Percentage |
|---|---|
| Sensitivity | 67.92 |
| Specificity | 98.72 |
| PPV | 81.82 |
| NPV | 97.31 |
Abbreviations: NPV, negative predictive value; PPV, positive predictive value.