Table 2.
Sensitivity and specificity of each administrative database coding algorithm
| Coding algorithm | Sensitivity (95% CI), % | Specificity (95% CI), % |
|---|---|---|
| ICD-10 Q611 | ≤0.9 (0.4–2.0)a | ≥92.3 (83.2–96.7)a |
| ICD-10 Q612 | 11.5 (9.2–14.4) | ≥92.3 (83.2–96.7)a |
| ICD-10 Q613 | 30.6 (27.0–34.5) | 87.7 (77.6–93.6) |
| OHIP Dx 753 | 67.5 (63.6–71.2) | 35.4 (24.9–47.5) |
| OHIP Dx 593 | 71.3 (67.5–74.8) | 20.0 (12.08–31.3) |
| ICD-10 Q611, Q612 or Q613 | 33.7 (30.1–37.7) | 86.2 (75.7–92.5) |
| OHIP Dx 753 or 593 | 91.0 (88.5–93.1) | 10.8 (5.3–20.6) |
| ICD-10 Q611, Q612 or Q613 or OHIP Dx 753 or 593 | 92.3 (89.8–94.2) | 10.8 (5.3–20.6) |
a
Sensitivity and specificities were calculated as if small cells were five to ensure individuals cannot be re-identified, as per ICES privacy policies.