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Table 1 Physical characteristics of injured elderly patients at ICU admissiona

From: Skeletal muscle predicts ventilator-free days, ICU-free days, and mortality in elderly ICU patients

Characteristics

All patients

Sarcopenic

Nonsarcopenic

P-value

(N= 149)

(n= 106)

(n= 43)

BMI (kg/m2)

25.6 (22.7 to 28.2)

24.4 (21.7 to 27.3)

27.6 (25.5 to 30.4)

<0.001

Underweight (%)

7 (n = 10)

9 (n = 9)

2 (n = 1)

0.13

Normal weight (%)

37 (n = 55)

44 (n = 47)

19 (n = 8)

0.004

Overweight (%)

42 (n = 62)

38 (n = 40)

51 (n = 22)

0.14

Obese (%)

15 (n = 22)

9 (n = 10)

28 (n = 12)

0.003

Muscle cross-sectional area (cm2/m2)

    

All patients

42.7 (36.1 to 49.3)

38.8 (34.0 to 45.7)

50.7 (43.3 to 56.9)

<0.001

Estimated whole-body muscle mass (kg)

23.8 (19.5 to 27.6)

23.1 (18.9 to 26.8)

25.6 (21.7 to 32.9)

0.002

Total fat cross-sectional area (cm2/m2)

108 (73.4 to 146)

98.8 (70.3 to 135)

131 (95.8 to 177)

<0.001

Estimated whole-body total fat mass (kg)

24.3 (19.6 to 29.9)

22.8 (19.4 to 28.9)

26.3 (22.3 to 34.1)

0.016

Visceral fat cross-sectional area (cm2/m2)

43.5 (25.4 to 70.6)

41.7 (21.3 to 71.0)

52.0 (33.8 to 70.6)

0.24

Estimated visceral fat mass (kg)

2.8 (1.5 to 4.5)

2.8 (1.3 to 4.5)

2.7 (2.0 to 4.1)

0.63

  1. aBMI = body mass index. Data for BMI, muscle cross-sectional area, estimated whole-body muscle mass, total fat cross-sectional area, estimated total fat mass, visceral fat cross-sectional area and estimated visceral fat mass are presented as medians (interquartile ranges). P-values depict the statistical difference between sarcopenic and nonsarcopenic patients, with statistical significance set at P ≤ 0.05.