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Table 1 Comparison of baseline characteristics between the validated group and the elderly group

From: Estimation of prevalence of sarcopenia by using a new bioelectrical impedance analysis in Chinese community-dwelling elderly people

  Validated group Elderly group p value
n mean ± SD n mean ± SD
Age (year) M 46 69.85 ± 7.03 419 69.10 ± 6.59 0.267
  F 47 67.89 ± 6.11 435 68.52 ± 6.44 0.524
Height (cm) M 43 163.85 ± 6.30 419 164.14 ± 6.16 0.770
  F 47 153.00 ± 5.76 435 152.56 ± 5.99 0.636
Weight (kg) M 43 67.14 ± 10.70 419 64.01 ± 9.16 0.037
  F 47 55.32 ± 7.70 435 56.02 ± 8.64 0.594
BMI (kg/m2) M 43 24.93 ± 3.11 419 23.72 ± 2.83 0.009
  F 47 23.66 ± 3.28 435 24.04 ± 3.25 0.451
GS (m/s) M 43 1.07 ± 0.19 418 1.08 ± 0.20 0.827
  F 47 1.03 ± 0.15 435 1.02 ± 0.18 0.708
HS (kg) M 43 35.50 ± 7.38 419 36.58 ± 7.08 0.346
  F 47 23.29 ± 4.12 435 23.47 ± 4.58 0.792
ASM (kg)       
BIA M 43 19.72 ± 2.85 419 19.63 ± 2.95 0.830
  F 47 13.86 ± 2.25 435 14.02 ± 2.36 0.667
DEXA M 43 18.74 ± 3.16 0 *  
  F 47 13.37 ± 2.13 0 *  
ASMI (kg/m2)       
BIA M 43 7.32 ± 0.69 419 7.26 ± 0.75 0.591
  F 47 5.89 ± 0.66 435 5.99 ± 0.72 0.379
DEXA M 43 6.95 ± 0.87 0 *  
  F 47 5.70 ± 0.77 0 *  
Medical diagnoses       
Hypertension M 43 19 (44.2) 419 178 (42.5) 0.830
  F 47 18 (38.3) 435 196 (45.2) 0.368
Diabetes M 43 6 (14.0) 419 82 (19.6) 0.372
  F 47 10 (21.3) 435 82 (18.9) 0.688
Thyroid diseases M 43 0 419 2 (0.5) 1.000
  F 47 0 435 4 (0.9) 1.000
Cardiac diseases M 43 1 (2.3) 419 23 (5.5) 0.373
  F 47 7 (14.9) 435 20 (4.6) 0.004
Renal diseases M 43 0 419 6 (1.4) 1.000
  F 47 2 (4.3) 435 7 (1.6) 0.216
Stroke M 43 0 418 4 (1.0) 1.000
  F 47 0 434 5 (1.2) 1.000
Cancer M 43 1 (2.3) 419 3 (0.7) 0.324
  F 47 0 435 2 (0.5) 1.000
COPD M 43 0 419 5 (1.2) 1.000
  F 47 1 (2.1) 435 7 (1.6) 0.563
Tuberculosis M 43 0 419 9 (2.1) 1.000
  F 47 0 435 1 (0.2) 1.000
Hepatic diseases M 43 1 (2.3) 419 8 (1.9) 0.588
  F 47 0 435 7 (1.6) 1.000
Smoking habits M 43 12 (27.9) 419 118 (28.2) 0.972
  F 47 0 435 13 (3.0) 0.626
Alcohol consumption M 43 24 (55.8) 419 173 (41.3) 0.067
  F 47 12 (25.5) 435 48 (11.1) 0.004
  1. *: no data; BMI body mass index, GS gait speed, HS handgrip strength, ASM appendicular skeletal muscle mass, ASMI appendicular skeletal muscle mass index, BIA bioelectrical impedance analysis, DXA dual energy x-ray absorptiometry, COPD chronic obstructive pulmonary disease; Using independent-samples t test for continuous variables and Pearson chi-square or Fisher exact test (where an expected cell count was < 5) for categorical variables. During testing, p < 0.05 was considered statistically significant
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