Skip to main content

Table 5 Performance of body assessment at each cutoff point

From: A comparative analysis of sarcopenia screening methods in Thai people with type 2 diabetes mellitus in an outpatient setting

Cutoff-point

Sensitivity (%)

Specificity (%)

LR + 

LR-

Post-test probability

(positive, negative)

Youden index

Calf circumference

 Male < 

  36

78.8

83.8

4.87

0.25

60.0, 7.0

0.626

  36.5

84.9

78.7

3.98

0.19

55.0, 6.0

0.635

  37

90.9

77.2

3.99

0.12

55.0, 3.5

0.681a

  37.5

93.9

69.1

3.04

0.09

49.0, 3.0

0.631

  38

100.0

62.5

2.67

0.00

45.0, 0.0

0.625

 Female < 

  35

73.3

80.0

3.67

0.33

53.0, 9.0

0.533

  35.5

80.0

73.0

2.97

0.27

48.0, 8.0

0.530

  36

91.1

67.8

2.83

0.13

47.0, 3.9

0.589a

  36.5

95.6

61.7

2.50

0.07

44.0, 2.0

0.573

  37

97.8

55.7

2.20

0.04

41.0, 1.0

0.534

Neck circumference

 Male < 

  38

48.8

93.4

7.32

0.55

69.0, 15.0

0.419

  38.5

57.6

88.2

4.90

0.48

60.0, 13.0

0.458

  39

60.6

85.3

4.12

0.46

56.0, 13.0

0.459

  39.5

69.7

78.9

3.27

0.39

50.0, 11.0

0.484a

  40

72.7

74.3

2.83

0.37

47.0, 10.0

0.470

 Female < 

  35

55.6

86.9

4.26

0.51

57.0, 14.0

0.425

  35.5

64.4

74.7

2.56

0.48

44.0, 13.0

0.392

  36

71.1

71.3

2.48

0.41

43.0, 11.0

0.424

  36.5

82.2

62.6

2.20

0.28

41.0, 8.0

0.448a

  37

84.4

59.1

2.07

0.26

39.0, 8.0

0.436

Calf circumference: M < 37; F < 36

Neck circumference:

M < 39.5; F < 36.5

73.1

86.9

5.56

0.31

63.0, 9.0

0.600

  1. aThe maximum of the Youden index