| Algorithm cut-off, % of claims that were palliative care claims | Sensitivity (95% CI) | Specificity (95% CI) | PPV (95% CI) | NPV (95% CI) |
|---|---|---|---|---|
| ≥ 50% | 24.0 (9.4–45.1) | 100.0 (96.1–100.0) | 100.0 (54.1–100.0) | 83.0 (74.8–89.5) |
| ≥ 10% | 76.0 (54.9–90.6) | 97.8 (92.5–99.7) | 90.5 (69.6–98.8) | 93.8 (87.0–97.7) |
| ≥ 5% | 76.0 (54.9–90.6) | 95.7 (89.4–98.8) | 82.6 (61.2–95.1) | 93.7 (86.8–97.7) |
| ≥ 3% | 76.0 (54.9–90.6) | 88.2 (79.8–93.9) | 67.9 (47.7–84.1) | 93.2 (85.8–97.5) |
Note: CI = confidence interval, NPV = negative predictive value, PPV = positive predictive value. *Validation sample = physicians who participated in survey and self-identified as practising mostly palliative care (n = 118).