Table 3 Diagnostic performance of SARC-F, SARC-CalF, and calf circumference for diagnosing sarcopenia

SARC-F

(≥ 4)

0.508

(0.477–0.538)

21.1

(17.4–25.2)

82.5

(80.8–84.2)

21.1

(17.9–24.7)

82.5

(81.7–83.2)

AWGS 2019 calf circumference

Male

(< 34 cm)

0.897

(0.874–0.920)

93.3

(89.3–96.1)

63.1

(59.3–66.8)

47.7

(45.1–50.4)

96.3

(94.1–97.7)

Female

(< 33 cm)

0.878

(0.852–0.904)

91.4

(86.7–94.8)

59.4

(56.7–62.0)

25.7

(24.2–27.2)

97.8

(96.6–98.6)

SARC-CalF

(≥ 11)

0.729

(0.699–0.759)

38.7

(34.1–43.4)

92

(90.8–93.2)

51.8

(47.1–56.5)

87.1

(86.3–88.0)

New cut-off calf circumference

Male

(< 33 cm)

0.823

(0.791–0.855)

84.4

(79.1–88.8)

80.2

(76.9–83.2)

60.6

(56.7–64.4)

93.4

(91.3–95.0)

Female

(< 31 cm)

0.804

(0.770–0.839)

77.9

(71.6–83.3)

83

(80.9–85.0)

41.3

(38.0-44.7)

96.1

(95.0-96.9)

Revised SARC-CalF

(≥ 11)

0.798

(0.774–0.822)

47

(42.3–51.7)

87.8

(86.3–89.2)

46.0

(42.3–49.9)

88.2

(87.3–89.1)