Table 5.
Apparent prevalence (diagnosis in the CCR), true prevalence (fulfillment of the diagnosis criteria) and predictive values of diabetes and hypertension.
| Apparent prevalence * (CI 95%) |
True prevalence ** (CI 95%) |
PPV (CI 95%) | NPV (CI 95%) | |
|---|---|---|---|---|
| Diabetes | 5.02 (4.96 - 5.07) | 5.06 (5.01 - 5.12) | 91.23 (72.30 - 97.64) | 99.98 (99.90 - 99.99) |
| - Male | 5.61 (5.53 - 5.70) | 5.67 (5.58 - 5.75) | 92.59 (63.89 - 98.88) | 99.97 (99.80 - 100) |
| - Female | 4.55 (4.48 - 4.62) | 4.59 (4.52 - 4.66) | 91.11(59.19 - 98.64) | 99.98 (99.84 - 100) |
| - Age < 70 | 2.89 (2.84 - 2.93) | 2.91 (2.87 - 2.96) | 85.58 (45.66 - 97.67) | 99.99 (99.90 - 100) |
| - Age ≥ 70 | 15.72 (15.50 - 15.94) | 15.87 (15.65 - 16.09) | 97.32(83.69 - 99.61) | 99.91 (99.38 - 99.99) |
| Hypertension | 14.11 (14.03 - 14.20) | 17.14 (17.05 - 17.23) | 85.24 (74.46 - 91.96) | 96.94 (96.24 - 97.52) |
| - Male | 13.31 (13.18 - 13.43) | 16.27 (16.13 - 16.41) | 85.84 (66.47 - 94.88) | 96.96 (95.87 - 97.78) |
| - Female | 14.75 (14.63 - 14.86) | 17.82 (17.70 - 17.95) | 84.90 (70.34 - 93.02) | 96.93 (95.94 - 97.68) |
| - Age < 70 | 7.75 (7.68 - 7.82) | 8.91 (8.84 - 8.99) | 68.72 (48.18 - 83.85) | 99.05 (98.53 - 99.39) |
| - Age ≥ 70 | 46.07 (45.77 - 46.36) | 57.86 (57.56 - 58.15) | 98.10 (94.40 - 99.37) | 79.61 (75.40 - 83.27) |
| - Without DM | 11.66 (11.58 - 11.74) | 13.81 (13.72 - 13.89) | 82.52 (69.44 - 90.74) | 97.94 (97.32 - 98.42) |
| - With DM | 60.60 (60.07 - 61.14) | 80.22 (79.78 - 80.65) | 98.68 (91.62 - 99.80) | 53.92 (45.09 - 62.52) |
PPV: positive predictive value; NPV: negative predictive value; CI 95%: confidence interval at 95%.