Skip to main content

Table 5 Apparent prevalence (diagnosis in the CCR), true prevalence (fulfillment of the diagnosis criteria) and predictive values of diabetes and hypertension.

From: Validation of diabetes mellitus and hypertension diagnosis in computerized medical records in primary health care

 

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)

  1. PPV: positive predictive value; NPV: negative predictive value; CI 95%: confidence interval at 95%.