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Table 1 Demographic characteristics

From: Brain CT can predict low lean mass in the elderly with cognitive impairment: a community-dwelling study

 

Low ASMI (n = 38)3

Normal ASMI (n = 43)3

p4

Clinical demographic data1

 Age (years)

77.6 ± 4.8

75.6 ± 6.7

0.128

 Gender (%)

  Male

17

13

0.177

  Female

21

30

 

 Height (cm)

155.6 ± 8.7

152.2 ± 7.6

0.101

 Body weight (kg)

54.1 ± 8.6

60.8 ± 10.6

< 0.001*

 BMI (kg/m2)

22.3 ± 3.0

26.2 ± 4.0

< 0.001*

 Grip strength (kg)

21.5 ± 8.9

20.6 ± 7.3

0.731

 Gait speed (m/s)

0.9 ± 0.4

1.0 ± 0.3

0.777

 CDR

  0.5

31

36

1.000

  1

5

5

 

  2

2

2

 

Assessments of brain atrophy2

 Visual rating scales

  GCA

26 ± 4

20 ± 4

< 0.001*

 Brain atrophy index

  EI

0.35 ± 0.04

0.35 ± 0.04

0.439

  FHI

0.28 ± 0.03

0.28 ± 0.03

0.247

  BCR

0.16 ± 0.03

0.15 ± 0.03

0.525

  SFR

0.06 ± 0.02

0.06 ± 0.02

0.734

  Schiersmann index

0.29 ± 0.04

0.28 ± 0.04

0.652

  Huckman index

57.50 ± 8.46

56.10 ± 8.20

0.884

Assessments of body composition2

 Dual energy x-ray absorptiometry

  ASMI (kg/m2)

5.54 ± 0.77

6.50 ± 0.83

< 0.001*

 Cross-sectional CT image at the L3 vertebral body level

  Adipose tissue index (cm2/m2)

   Visceral adipose tissue

48.4 ± 28.5

63.0 ± 29.3

0.008*

   Subcutaneous adipose tissue

29.4 ± 20.3

51.9 ± 36.8

0.001*

  Skeletal muscle index (cm2/m2)

   Abdominal wall muscle

16.1 ± 3.3

19.2 ± 3.9

< 0.001*

   Paraspinal muscle

14.8 ± 2.7

17.1 ± 2.9

< 0.001*

   Psoas muscle

4.7 ± 1.6

5.3 ± 1.7

0.041*

   Total muscle

35.5 ± 5.6

41.7 ± 6.6

< 0.001*

Assessments of body composition2

 Cross-sectional CT image at the L3 vertebral body level

  Attenuation (HU)

   Visceral adipose tissue

−82.4 ± 15.5

−88.9 ± 12.2

0.053

   Subcutaneous adipose tissue

−108.9 ± 6.5

− 108.7 ± 5.5

0.794

   Abdominal wall muscle

21.2 ± 9.7

21.3 ± 8.8

0.933

   Paraspinal muscle

32.6 ± 6.6

30.5 ± 8.6

0.074

   Psoas muscle

39.8 ± 4.3

41.0 ± 4.7

0.283

   Total muscle

28.4 ± 7.2

27.7 ± 7.6

0.416

 Cross- sectional CT image at 2 cm below the zygomatic arch

  Masseter muscle index

118.2 ± 25.4

152.75 ± 27.07

< 0.001*

  1. Demographic data, cognitive function level, and assessments of brain atrophy and body composition in elderly patients with low ASMI and normal ASMI subjects
  2. Abbreviations: ASMI Appendicular skeletal muscle index, BCR Bicaudate ratio, BMI Body Mass Index, CDR Clinical dementia rating scale, EI Evans index, FHI Frontal horn index, GCA Global cortical atrophy, SFR Sylvian fissure ratio
  3. 1Sex data were compared by Pearson chi-square test. CDR data were compared by Fisher’s exact test. Age data were compared by independent t test. The others demographic data were compared by analysis of covariance (ANCOVA) after controlling for age and sex
  4. 2Visual rating scales, brain atrophy index, and cross-sectional CT image data were compared by ANCOVA after controlling for age and sex
  5. 3Data are presented as mean ± standard deviation; 4* p < 0.05
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BMC Geriatrics

ISSN: 1471-2318

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