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Table 2 Performance of the optimal HbA 1c cut-points in participants by demographic and clinical characteristics

From: Combining glycosylated hemoglobin A1c and fasting plasma glucose for diagnosis of type 2 diabetes in Chinese adults

Characteristics

Sensitivity of FPG ≥ 7.0 mmol/l (%)

Optimal HbA1cmmol/mol (%)

Performance of optimal HbA1cvalue (%)

   

Sensitivity

Specificity

PPV

NPV

All subjects

52.6

43 (6.1)

75.6

89.3

34.1

98.0

Gender

 Male

59.0

43 (6.1)

78.2

88.8

36.7

98.0

 Female

45.9

43 (6.1)

72.7

89.8

31.6

98.1

Age

 35-44

68.8

40 (5.8)

84.4

84.9

15.1

99.4

 45-54

59.9

41 (5.9)

85.9

82.5

23.5

98.9

 55-64

51.1

42 (6.0)

82.2

81.3

27.3

98.2

 65-74

40.0

45 (6.3)

70.0

91.9

51.1

96.2

BMI

 ≤23.0

52.9

43 (6.1)

73.6

92.7

27.0

99.0

 23.1-24.9

58.0

43 (6.1)

75.0

90.1

32.9

98.2

 ≥25.0

50.6

43 (6.1)

76.4

85.3

37.8

96.9

Elevated WCa

 No

56.6

43 (6.1)

78.9

91.8

30.2

99.0

 Yes

50.4

43 (6.1)

73.6

85.8

37.1

96.6

Hypertensionb

 No

52.6

43 (6.1)

76.3

90.6

29.7

98.7

 Yes

52.7

43 (6.1)

74.6

84.5

42.1

95.7

Elevated TGc

 No

50.8

41 (5.9)

83.2

83.1

18.3

99.1

 Yes

53.9

43 (6.1)

78.1

85.1

39.9

96.8

Reduced HDL-Cd

 No

56.7

43 (6.1)

72.7

89.6

31.6

98.0

 Yes

46.4

43 (6.1)

79.9

88.7

38.4

98.0

HW phenotypee

 No

53.2

43 (6.1)

75.3

90.8

30.0

98.6

 Yes

51.9

43 (6.1)

75.9

82.9

42.3

95.4

  1. aWC ≥ 90 cm in men and ≥ 80 cm in women;
  2. bSBP/DBP ≥ 140/90 mmHg or being on antihypertensive medications;
  3. cTG ≥ 1.695 mmol/l;
  4. dHDL-C < 1.036 mmol/l (men) and < 1.295 mmol/l (women);
  5. ehypertriglyceridemic waist phenotype, defined as having both a high WC ( ≥ 90 cm for men, ≥ 80 cm for women) and an elevated TG level ( ≥ 1.695 mmol/l).