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Table 2 Characteristics of elderly Korean women older than 65 years by presence of sarcopenia

From: High prevalence of sarcopenia among binge drinking elderly women: a nationwide population-based study

Variables All Non-sarcopenia Sarcopenia P-value
  (n = 2322) (n = 2071) (n = 251)  
Age (years)* 72 .5 ± 5.5 72.3 ± 5.4 74.2 ± 6.3 <0.001
BMI (kg/m2)* 24.1 ± 3.4 24.5 ± 3.3 20.9 ± 2.5 <0.001
Waist circumference (cm)* 83.1 ± 9.7 84.0 ± 9.5 76.1 ± 8.8 <0.001
Appendicular SMI (kg/m2)* 6.4 ± 1.1 6.5 ± 1.0 5.0 ± 0.3 <0.001
Education (%)     0.499
 < Elementary school 86.7 87.0 84.2  
 Elementary school 6.3 6.2 7.5  
 Middle school 5.4 5.2 7.1  
 > Middle school 1.6 1.6 1.2  
Cigarette smoking status (%)     0.245
 Never 89.6 89.9 86.6  
 Former 1.6 1.5 2.4  
 Current 8.8 8.6 10.9  
Moderate physical activity (%)a 12.3 12.8 8.6 0.064
Walking physical activity (%)b 39.7 40.0 38.0 0.561
Income (%)     0.711
 Quartile 1 (lowest) 24.4 24.5 23.8  
 Quartile 2 25.5 25.9 22.9  
 Quartile 3 24.4 24.3 25.8  
 Quartile 4 (highest) 25.6 25.4 27.5  
Energy intake (kcal/day)* 1420.6 ± 534.5 1437.6 ± 540.7 1276.1 ± 454.0 <0.001
Protein intake (g/day)* 44.7 ± 22.9 45.3 ± 23.2 40.0 ± 19.5 0.001
Comorbidity (%)     
 Diabetes 17.7 17.8 17.0 0.352
 Chronic obstructive pulmonary disease 0.5 0.5 0 0.892
 Chronic renal failure 0.7 0.7 0.8 0.053
 Malignancy 5.7 5.6 6.4 0.641
  1. *All values are presented as the mean ± SD and percentage distribution of participants, as appropriate: BMI body mass index, SMI skeletal muscle index, BMD bone mass density. Significance was compared between non-sarcopenia and sarcopenia groups using Student’s t-test or Pearson chi-square test
  2. aModerate physical activity was 5 or more days of moderate-intensity activity for at least 30 min per day
  3. bWalking physical activity was 5 or more days of walking of at least 30 min per day