Table 2: Results of validation analysis using the outcome of original manual review of the electronic medical record charts as the reference standard.
| Disease | No. of cases | Sensitivity (95% CI), % | Specificity (95% CI), % | Positive predictive value (95% CI), % | Negative predictive value (95% CI), % | |||
|---|---|---|---|---|---|---|---|---|
| Chart +, CPCSSN + | Chart -, CPCSSN + | Chart -, CPCSSN - | Chart +, CPCSSN - | |||||
| Hypertension | 915 | 66 | 885 | 40 | 95.8 (94.5-97.1) |
93.1 (91.4-94.7) |
93.3 (91.7-94.8) |
95.7 (94.4-97.0) |
| Diabetes | 311 | 33 | 1553 | 9 | 97.2 (95.4-99.0) |
97.9 (97.2-98.6) |
90.4 (87.3-93.5) |
99.4 (99.0-99.8) |
| Depression | 299 | 47 | 1473 | 87 | 77.5 (73.3-81.6) |
96.9 (96.0-97.9) |
86.4 (82.8-90.0) |
94.4 (93.3-95.6) |
| Chronic obstructive pulmonary disease | 125 | 25 | 1730 | 26 | 82.8 (76.8-88.8) |
98.6 (98.0-99.1) |
83.3 (77.4-89.3) |
98.5 (98.0-99.1) |
| Dementia | 82 | 15 | 1797 | 12 | 87.2 (80.5-94.0) |
99.2 (98.8-99.6) |
84.5 (77.3-91.7) |
99.3 (99.0-99.7) |
| Osteoarthritis | 507 | 88 | 1211 | 100 | 83.5 (80.6-86.5) |
93.2 (91.9-94.6) |
85.2 (82.4-88.1) |
92.4 (90.9-93.8) |
| Epilepsy | 130 | 19 | 1751 | 6 | 95.6 (92.1-99.0) |
98.9 (98.4-99.4) |
87.2 (81.9-92.6) |
99.7 (99.4-99.9) |
| Parkinsonism | 66 | 11 | 1812 | 17 | 79.5 (70.8-88.2) |
99.4 (99.0-99.8) |
85.7 (77.9-93.5) |
99.1 (98.6-99.5) |
Note: CI = confidence interval, CPCSSN = Canadian Primary Care Sentinel Surveillance Network.