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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.