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Table 6 Predictive values for hypertension and diabetes for different prevalences (sensitivity analysis).

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

Prevalence

Diabetes

Hypertension

 

PPV (CI 95%)

NPV (CI 95%)

PPV (CI 95%)

NPV (CI 95%)

4%

89.05 (67.11 - 97.01)

99.98 (99.92 - 100)

53.76 (36.99 - 69.72)

99.37 (99.22 - 99.49)

4.5%

90.19 (69.76 - 97.34)

99.98 (99.91 - 99.99)

56.80 (39.91 - 72.26)

99.29 (99.12 - 99.42)

5%

91.13 (72.04 - 97.61)

99.98 (99.90 - 99.99)

59.50 (42.59 - 74.42)

99.20 (99.02 - 99.36)

5.5%

91.91 (74.02 - 97.84)

99.97 (99.89 - 99.99)

61.89 (45.06 - 76.29)

99.12 (98.91 - 99.29)

6%

92.57 (75.76 - 98.02)

99.97 (99.88 - 99.99)

64.05 (47.36 - 77.91)

99.04 (98.81 - 99.22)

6.5%

93.13 (77.29 - 98.18)

99.97 (99.87 - 99.99)

65.99 (49.49 - 79.35)

98.95 (98.70 - 99.15)

7%

93.62 (78.66 - 98.32)

99.96 (99.86 - 99.99)

67.75 (51.47 - 80.62)

98.87 (98.60 - 99.08)

7.5%

94.05 (79.88 - 98.44)

99.96 (99.85 - 99.99)

69.35 (53.33 - 81.76)

98.78 (98.49 - 99.01)

8%

94.43 (80.98 - 98.54)

99.96 (99.84 - 99.99)

70.82 (55.07 - 82.78)

98.69 (98.38 - 98.94)

8.5%

94.77 (81.98 - 98.63)

99.96 (99.82 - 99.99)

72.17 (56.69 - 83.70)

98.60 (98.28 - 98.87)

9%

95.07 (82.88 - 98.72)

99.95 (99.81 - 99.99)

73.41 (58.22 - 84.54)

98.51 (98.17 - 98.80)

9.5%

95.34 (83.71 - 98.79)

99.95 (99.80 - 99.99)

74.55 (59.67 - 85.30)

98.42 (98.06 - 98.72)

10%

95.59 (84.47 - 98.86)

99.95 (99.79 - 99.99)

75.62 (61.03 - 86.00)

98.33 (97.94 - 98.65)

11%

96.02 (85.82 - 98.97)

99.94 (99.77 - 99.99)

77.53 (63.53 - 87.23)

98.15 (97.72 - 98.50)

12%

96.38 (86.97 - 99.07)

99.94 (99.74 - 99.98)

79.19 (65.77 - 88.29)

97.96 (97.49 - 98.35)

13%

96.68 (87.98 - 99.15)

99.93 (99.72 - 99.98)

80.66 (67.80 - 89.20)

97.77 (97.25 - 98.19)

14%

96.95 (88.85 - 99.22)

99.92 (99.69 - 99.98)

81.96 (69.64 - 90.00)

97.58 (97.02 - 98.04)

15%

97.18 (89.63 - 99.28)

99.92 (99.67 - 99.98)

83.12 (71.32 - 90.70)

97.38 (96.77 - 97.87)

20%

97.99 (92.45 - 99.49)

99.88 (99.53 - 99.97)

87.46 (77.89 - 93.25)

96.33 (95.49 - 97.02)

25%

98.49 (94.23 - 99.62)

99.84 (99.37 - 99.96)

90.29 (82.45 - 94.85)

95.16 (94.08 - 96.06)

30%

98.82 (95.45 - 99.70)

99.80 (99.20 - 99.95)

92.28 (85.80 - 95.95)

93.87 (92.51 - 94.99)

35%

99.06 (96.35 - 99.76)

99.75 (98.99 - 99.94)

93.76 (88.36 - 96.75)

92.41 (90.77 - 93.78)

40%

99.24 (97.03 - 99.81)

99.68 (98.75 - 99.92)

94.90 (90.38 - 97.36)

90.77 (88.81 - 92.42)

45%

99.38 (97.56 - 99.84)

99.61 (98.47 - 99.90)

95.80 (92.02 - 97.84)

88.91 (86.61 - 90.85)

50%

99.49 (98.00 - 99.87)

99.53 (98.14 - 99.88)

96.54 (93.37 - 98.22)

86.77 (84.11 - 89.04)

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