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Table 1 General characteristics of the elderly subjects

From: Associations of recommended food score and physical performance in Korean elderly

  Total (n = 622) Men (n = 294) Women (n = 328)  
Mean ± S.D. or n (%) Mean ± S.D. or n (%) Mean ± S.D. or n (%) P-value
Age, yrs 71.8 ± 4.9 71.7 ± 4.6 71.9 ± 5.2 0.654
Height, cm 159.0 ± 8.6 166.1 ± 5.6 152.6 ± 5.2 <.0001
Weight, kg 60.5 ± 8.8 65.2 ± 8.0 56.3 ± 7.3 <.0001
BMI, kg/m2 23.9 ± 2.7 23.6 ± 2.5 24.2 ± 2.8 0.008
Body fat, % 29.8 ± 7.9 24.2 ± 5.6 34.8 ± 6.0 <.0001
Lean body mass, kg 22.9 ± 4.7 27.0 ± 3.1 19.3 ± 2.3 <.0001
Income, won/mo     0.0002
 Less than 2,000,000 287 (46.1) 159 (54.1) 128 (39.0)  
 Over 2,000,000 335 (53.9) 135 (45.9) 200 (61.0)  
Education     <.0001
 Elementary/middle school 338 (54.3) 115 (39.1) 223 (68.0)  
 High school 184 (29.6) 101 (34.4) 83 (25.3)  
 College 100 (16.1) 78 (26.5) 22 (6.7)  
Marital status     <.0001
 Single 207 (33.3) 42 (14.3) 165 (50.3)  
 Marital 415 (66.7) 252 (85.7) 163 (49.7)  
Current smoker, yes 39 (6.3) 36 (12.2) 3 (0.9) <.0001
Current drinker, yes 235 (37.8) 173 (58.8) 62 (18.9) <.0001
Physical activity, METs-h/wk 8.7 ± 9.4 8.4 ± 8.3 8.9 ± 10.3 0.535
Recommended food score 30.1 ± 8.2 29.5 ± 8.8 30.7 ± 7.6 0.065
Physical performance
 2-min step test, repㆍ120sec 105.2 ± 23.3 104.5 ± 20.7 105.7 ± 25.5 0.524
 Timed up and go test, sec 6.4 ± 1.6 6.0 ± 1.3 6.7 ± 1.8 <.0001
 Figure of 8 walk test, sec 27.6 ± 7.0 26.0 ± 5.6 29.1 ± 7.8 <.0001
 Grip strength, kg 27.8 ± 8.2 34.5 ± 6.1 21.8 ± 4.1 <.0001
 Grip strength, % 45.8 ± 11.0 53.4 ± 9.1 39.0 ± 7.7 <.0001
 Arm curl test, frequency 16.8 ± 5.0 18.3 ± 5.2 15.5 ± 4.3 <.0001
  1. S.D., standard deviation; BMI, body mass index; Current drinker was defined as consuming alcohol more than once a month and current smoker was defined as current smoking or cessation of smoking within the past 12 months. Marriage was defined as reporting married or living as married