| Medication | No. active users (≥10 d) |
Positive predictive value % (95% CI) |
Negative predictive value % (95% CI) |
Sensitivity % (95% CI) |
Specificity % (95% CI) |
Accuracy % (95% CI) |
|---|---|---|---|---|---|---|
| Aspirin | 157 | 85.8 (80.1–90.1) | 91.9 (88.6–94.2) | 84.7 (78.1–90.0) | 92.5 (88.9–95.2) | 89.8 (86.6–92.4) |
| NSAIDs | 18a | 14.3 (3.9–40.9) | 98.2 (97.9–98.5) | 11.1 (1.4–34.7) | 98.6 (97.6–99.3) | 96.9 (95.5–97.9) |
| Ibuprofen | 13 | 15.4 (4.3–42.5) | 97.5 (96.9–98.0) | 15.4 (1.9–45.5) | 97.5 (95.5–98.7) | 95.1 (92.7–96.9) |
| Naproxen | 5 | 0 | 98.9 (98.9–98.9) | 0 (0–52.2) | 99.8 (98.8–100) | 98.7 (97.1–99.5) |
| PPIs | 89 | 67.0 (59.3–73.8) | 98.9 (98.2–99.3) | 84.3 (75.0–91.1) | 97.1 (96.0–97.9) | 96.2 (95.1–97.2) |
| Omeprazole | 76 | 65.3 (57.4–72.5) | 96.6 (94.4–98.0) | 84.2 (74.0–91.6) | 90.9 (87.5–93.6) | 89.8 (86.6–92.4) |
| Esomeprazole | 8 | 77.8 (46.1–93.5) | 99.8% (98.6–100) | 87.5 (47.4–99.7) | 99.6 (98.4–100) | 99.3 (98.1–99.9) |
| Lansoprazole | 5 | 80.0 (35.0–96.8) | 99.8 (98.7–100) | 80.0 (28.4–99.5) | 99.8 (98.8–100) | 99.6 (98.4–100) |
OTC, over-the-counter; EHR, electronic health record; NSAID, nonsteroidal anti-inflammatory drug; PPI, proton pump inhibitor.
a
Two patients were actively using both ibuprofen and naproxen for 10+ days each.