Table 2 Diagnostic performance of SARC-F, SARC-CalF, and calf circumference for screening possible sarcopenia

SARC-F

(≥ 4)

0.718

(0.684–0.752)

99.8

(98.8–99.9)

7.6

(6.5–8.9)

19.3

(19.1–19.6)

99.4

(95.6–99.9)

AWGS 2019 calf circumference

Male

(< 34 cm)

0.528

(0.471–0.585)

52.4

(48.9–55.9)

52.8

(42.0-63.3)

90.7

(88.6–92.5)

11.2

(9.3–13.4)

Female

(< 33 cm)

0.565

(0.503–0.627)

47.8

(45.3–50.4)

63.5

(50.4–75.3)

96.9

(95.7–97.8)

4.9

(4.1–5.8)

SARC-CalF

(≥ 11)

0.712

(0.672–0.752)

98.8

(96.9–99.7)

7.1

(6.0-8.2)

14.3

(14.1–14.5)

97.4

(93.3–99.0)

New cut-off calf circumference

Male

(< 33 cm)

0.526

(0.463–0.588)

37.5

(34.2–41.0)

68.1

(57.5–77.5)

91.2

(88.4–93.4)

11

(9.6–12.6)

Female

(< 31 cm)

0.557

(0.486–0.628)

30.5

(28.2–32.9)

82.5

(70.9–91.0)

97.7

(96.0-98.6)

4.8

(4.2–5.3)

Revised SARC-CalF

(≥ 11)

0.666

(0.620–0.712)

19.3

(17.7–21.0)

93.5

(88.4–96.8)

97.8

(96.1–98.8)

7.2

(6.9–7.5)