Table 1 Baseline characteristics of the participants stratified by sarcopenia status (N = 933)
From: Prevalence and associated body composition factors of sarcopenia in community-dwelling older adults
Characteristics | All N = 933 | Non-sarcopenia N = 851 | Sarcopenia N = 82 | P value |
|---|---|---|---|---|
Sex n (%) | Â | Â | Â | 0.786 |
 Male | 245 (26.3%) | 225 (91.8%) | 20 (8.2%) |  |
 Female | 688 (73.7%) | 626 (91%) | 62 (9%) |  |
 Age, mean (sd)/years | 67.94 (7.61) | 67.5 (7.32) | 72.5 (9.07) |  < 0.001 |
Age groups, n (%) |  |  |  |  < 0.001 |
 50–59 | 120 (12.9%) | 114 (95%) | 6 (5%) |  |
 60–69 | 450 (48.2%) | 424 (94.2%) | 26 (5.8%) |  |
 70–79 | 283 (30.3%) | 254 (89.8%) | 29 (10.2%) |  |
 80 +  | 80 (8.6%) | 59 (73.8%) | 21 (26.2%) |  |
Educational level, n (%) | Â | Â | Â | 0.053 |
 Elementary school | 40 (4.3%) | 32 (80%) | 8 (20%) |  |
 Middle school | 232 (24.9%) | 215 (92.7%) | 17 (7.3%) |  |
 high school | 339 (36.3%) | 313 (92.3%) | 26 (7.7%) |  |
 College and above | 322 (34.5%) | 291 (90.4%) | 31 (9.6%) |  |
Occupation group, n (%) | Â | Â | Â | 0.269 |
 Professionals | 151 (16.2%) | 132 (87.4%) | 19 (12.6%) |  |
 Administrator | 128 (13.7%) | 118 (92.2%) | 10 (7.8%) |  |
 Unemployed | 177 (19%) | 160 (90.4%) | 17 (9.6%) |  |
 Others | 477 (51.1%) | 441 (92.5%) | 36 (7.5%) |  |
Income status, n(%)/thousand | Â | Â | Â | 0.095 |
  ≤ 80 | 369 (39.5%) | 329 (89.2%) | 40 (10.8%) |  |
 80–500 | 564 (60.5%) | 522 (92.6%) | 42 (7.4%) |  |
Spouse status, n (%) | Â | Â | Â | 0.246 |
 Without spouse | 198 (21.2%) | 176 (88.9%) | 22 (11.1%) |  |
 With spouse | 735 (78.8%) | 675 (91.8%) | 60 (8.2%) |  |
 Arm circumference/cm, mean (sd) | 27.92 (3.51) | 28.07 (3.37) | 26.34 (4.42) | 0.0008 |
 Leg circumference/cm, mean (sd) | 34.47 (3.7) | 34.7 (3.71) | 32.06 (2.62) |  < 0.001 |
 Waist/cm, mean (sd) | 85.35 (10.1) | 85.86 (10.08) | 80.04 (8.81) |  < 0.001 |
 Hip circumference/cm, mean (sd) | 98.25 (8.72) | 98.75 (8.72) | 93.08 (6.82) |  < 0.001 |
 WHR, mean (sd) | 0.87 (0.1) | 0.87 (0.11) | 0.86 (0.08) | 0.2141 |
 SMI/kg·m−2, mean (sd) | 6.83 (1.15) | 6.95 (1.12) | 5.61 (0.55) |  < 0.001 |
TBW/kg, mean (sd) | 32.51 (5.66) | 33.09 (5.49) | 26.51 (3.44) |  < 0.001 |
ICW/kg, mean (sd) | 19.85 (3.5) | 20.22 (3.39) | 16.05 (2.1) |  < 0.001 |
 ECW/kg, mean (sd) | 12.66 (2.18) | 12.88 (2.12) | 10.46 (1.37) |  < 0.001 |
 Protein/kg, mean (sd) | 8.58 (1.51) | 8.74 (1.47) | 6.95 (0.91) |  < 0.001 |
 Minerals/kg, mean (sd) | 3 (0.78) | 3.04 (0.8) | 2.56 (0.3) |  < 0.001 |
 BFM/kg, mean (sd) | 21.33 (6.39) | 21.68 (6.42) | 17.73 (4.83) |  < 0.001 |
 SLM/kg, mean (sd) | 41.62 (7.26) | 42.37 (7.05) | 33.88 (4.4) |  < 0.001 |
 FFM/kg, mean (sd) | 44.09 (7.51) | 44.87 (7.28) | 36.02 (4.6) |  < 0.001 |
 SMM/kg, mean (sd) | 23.89 (4.57) | 24.37 (4.42) | 18.93 (2.74) |  < 0.001 |
 BMI/kg·m−2, mean (sd) | 25.2 (6.84) | 25.51 (7.03) | 22.01 (3.04) |  < 0.001 |
 PBF/%, mean (sd) | 32.31 (6.82) | 32.28 (6.79) | 32.69 (7.07) | 0.6128 |
 BMR/kcal·d−1, mean (sd) | 1322.4 (162.2) | 1339.2 (157.1) | 1148.0 (99.4) |  < 0.001 |
 VFA/cm2, mean (sd) | 106.49 (37.34) | 107.53 (37.6) | 95.67 (32.9) | 0.0027 |
 BCM/kg, mean (sd) | 28.43 (5.02) | 28.96 (4.86) | 22.99 (3) |  < 0.001 |
 AMC/cm, mean (sd) | 26.33 (2.56) | 26.59 (2.49) | 23.64 (1.59) |  < 0.001 |
 BMC/g, mean (sd) | 2.47 (0.74) | 2.5 (0.76) | 2.14 (0.25) |  < 0.001 |
 FFMI/kg·m−2, mean (sd) | 17 (6.39) | 17.22 (6.64) | 14.64 (0.99) |  < 0.001 |
 FMI/kg·m−2, mean (sd) | 8.21 (2.56) | 8.29 (2.54) | 7.36 (2.65) | 0.0032 |
 WBPA/°, mean (sd) | 4.67 (0.6) | 4.73 (0.57) | 4.05 (0.55) |  < 0.001 |