Table 3 Validity for a Case Definition Stratified by Region, Year, Province, and Patient Characteristicsa
N | Prevalence Admin Data (%) | Prevalence Chart Data (%) | Sensitivity (%) (95% CI) | Specificity (%) (95% CI) | PPV (%) (95% CI) | NPV (%) (95% CI) | |
|---|---|---|---|---|---|---|---|
Region | |||||||
Rural | 990 | 14.9 | 18.8 | 58.6 (51.2, 65.8) | 95.2 (93.4, 96.5) | 73.7 (65.8, 80.5) | 90.9 (88.7, 92.7) |
Urban | 2372 | 15.6 | 16.9 | 62.7 (57.8, 67.4) | 94.0 (92.9, 95.0) | 68.1 (63.1, 72.8) | 92.5 (91.3, 93.6) |
Year | |||||||
2001 | 1482 | 16.5 | 15.9 | 61.9 (55.3, 69.1) | 92.1 (90.4, 93.5) | 59.6 (53.2, 65.8) | 92.7 (91.1, 94.1) |
2004 | 1880 | 14.5 | 18.7 | 61.1 (55.8. 66.2) | 96.2 (95.1, 97.1) | 78.8 (73.4, 83.5) | 91.5 (90.0, 92.8) |
Province | |||||||
AB | 1565 | 14.6 | 19.2 | 60.5 (54.7, 66.0) | 96.4 (95.2, 97.3) | 79.8 (74.0, 84.8) | 91.1 (89.4, 92.6) |
BC | 1797 | 16.1 | 16.0 | 62.4 (56.5, 68.0) | 92.7 (91.2, 93.9) | 61.7 (55.9, 67.4) | 92.8 (91.4, 94.1) |
Sex | |||||||
Female | 2142 | 17.6 | 20.4 | 61.2 (56.5, 65.8) | 93.6 (92.3, 94.7) | 70.8 (66.0, 75.4) | 90.4 (89.0, 91.8) |
Male | 1220 | 11.6 | 12.5 | 61.8 (53.6, 69.6) | 95.6 (94.2, 96.8) | 66.7 (58.2, 74.4) | 94.6 (93.1, 95.9) |
Age (years) | |||||||
<65 | 2709 | 17.0 | 19.1 | 61.4 (57.1, 65.6) | 93.5 (92.4, 94.5) | 69.0 (64.5, 73.2) | 91.1 (89.9, 92.3) |
≥ 65 | 653 | 8.7 | 10.7 | 61.4 (49.0, 72.8) | 97.6 (96.0, 98.7) | 75.4 (62.2, 85.9) | 95.5 (93.5, 97.0) |
Comorbid Presenceb | |||||||
Yes | 1362 | 15.1 | 18.2 | 58.9 (52.5, 65.1) | 94.6 (93.1, 95.9) | 70.9 (64.2, 77.0) | 91.2 (89.4, 92.8) |
No | 2000 | 15.6 | 17.0 | 63.2 (57.9, 68.4) | 94.2 (92.9, 95.2) | 68.9 (63.5, 74.0) | 92.6 (91.2, 93.8) |