Table 4 Reference values (p5) for SMI, SMA, and SMRA, per age and BMI category.

From: Reference values for low muscle mass and myosteatosis using tomographic muscle measurements in living kidney donors

Age, years

20–29

30–39

40–49

50–59

60–69

70–79

 

Male

Female

Male

Female

Male

Female

Male

Female

Male

Female

Male

Female

SMI, cm2/m2

All BMI’s

43.1

40.7

41.8

36.9

43.1

35.4

41.3

35.4

40.5

34.1

33.3

31.5

 < 25

43.1

a

38.3

36.8

38.2

35.1

39.8

34.1

40.0

34.2

30.9

31.6

25–29.99

50.0

a

47.6

37.9

43.5

35.7

44.9

35.8

43.8

33.5

43.5

31.5

 ≥ 30

46.9

a

46.4

40.0

44.9

39.4

46.4

36.7

52.5

35.5

51.0

42.7

SMA, cm2

All BMI’s

129.5

110.8

143.8

107.4

141.6

102.0

136.5

98.5

134.8

94.7

109.8

86.3

 < 25

129.5

a

141.0

104.1

140.4

100.0

129.1

97.5

126.8

94.4

101.3

82.9

25–29.99

167.6

a

164.7

108.3

134.2

98.8

147.1

99.4

140.0

94.2

133.1

96.4

 ≥ 30

155.3

a

169.3

111.6

139.1

112.2

136.7

98.9

162.1

97.3

148.1

100.0

SMRA, HU

All BMI’s

47.3

42.3

42.2

36.3

38.3

40.7

36.9

33.2

32.5

31.7

32.1

34.8

 < 25

49.2

a

45.6

45.1

45.0

42.6

44.6

43.7

38.4

38.0

39.1

38.2

25–29.99

52.7

a

42.1

43.7

41.1

41.4

36.6

33.1

31.4

30.1

35.9

34.6

 ≥ 30

47.3

a

36.7

36.8

34.8

24.8

29.6

26.2

36.5

21.2

29.7

37.3

  1. SMI skeletal muscle index (cm2/m2), SMA skeletal muscle area (cm2), SMRA skeletal muscle radiation attenuation (HU), BMI body mass index (kg/m2).
  2. aNumber of donors per BMI category too small to perform analyses. Only reference value for all BMI’s provided.