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Table 1 Sensitivity and specificity rates applied to the state transition models

From: Cost-effectiveness analysis for HbA1c test intervals to screen patients with type 2 diabetes based on risk stratification

Age group

BMI group

Interval

HbA1c sensitivity (%)

HbA1c specificity (%)

30–44

Underweight (< 18.5 kg/m2)

Annual

0.0

100.0

3 years

50.0

100.0

10 years

81.8

99.9

Normal (18.5–25 kg/m2)

Annual

0.0

100.0

3 years

47.5

99.9

6 years

68.1

99.9

Overweight (25–30 kg/m2)

Annual

0.0

100.0

3 years

54.5

99.7

4 years

57.8

99.6

Obese (< 30 kg/m2)

Annual

0.0

100.0

2 years

37.5

99.1

3 years

62.2

98.6

45–59

Underweight (< 18.5 kg/m2)

Annual

0.0

100.0

3 years

66.7

99.8

10 years

70.0

99.7

Normal (18.5–25 kg/m2)

Annual

0.0

100.0

3 years

56.0

99.7

6 years

73.5

99.5

Overweight (25–30 kg/m2)

Annual

2.5

100.0

3 years

61.1

99.1

4 years

66.8

99.0

Obese (< 30 kg/m2)

Annual

0.0

100.0

3 years

62.0

98.0

4 years

71.4

98.0

60–74

Underweight (< 18.5 kg/m2)

Annual

0.0

100.0

3 years

50.0

99.5

6 years

87.5

99.3

Normal (18.5–25 kg/m2)

Annual

0.0

100.0

3 years

50.3

99.3

7 years

72.7

99.1

Overweight (25–30 kg/m2)

Annual

0.0

100.0

3 years

52.3

99.1

5 years

64.5

98.7

Obese (< 30 kg/m2)

Annual

0.0

100.0

3 years

60.0

97.5

4 years

70.0

97.5