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Table 2 Association between physical performance, comorbidity index, and quality of life

From: Gait speed and handgrip strength as predictors of all-cause mortality and cardiovascular events in hemodialysis patients

 Normal GS and HSNormal GS and low HSLow GS and normal HSLow GS and HSp value
Charlson comorbidity scores*4 [2, 4]4 [3, 5]5 [3, 5]5 [4, 5]< 0.001a,b,c,e
Liu comorbidity scores*4 [3, 5]4 [3, 6]6 [4, 7]6 [4, 7]< 0.001c,e
K-MMSE28 [26, 29]27 [24, 28]27 [25, 30]27 [23, 29]0.030c
BDI14 [7, 21]13 [9, 20]17 [6, 25]16 [11, 28]0.122
KD-QOL
 Physical components
  Physical functioning85 [65, 95]77 [50, 90]60 [23, 80]40 [25, 65]< 0.001b,c,d,e
  Pain73 [58, 100]76 [55, 100]78 [45, 90]55 [45, 80]0.050c
  General health35 [25, 50]40 [25, 57]35 [21, 49]25 [15, 35]0.003c,e
  Energy/fatigue45 [35, 59]50 [39, 55]50 [40, 55]40 [20, 50]0.049c
 Mental components
Cognitive function87 [80, 100]87 [67, 100]80 [60, 93]73 [60, 93]0.007b,c
  Sleep60 [50, 73]60 [53, 75]58 [46, 65]58 [43, 65]0.367
  Emotional well-being60 [45, 72]60 [52, 76]60 [52, 68]52 [40, 64]0.089
 Social components
  Work status0 [0, 50]0 [0, 50]0 [0, 50]0 [0, 50]0.170
  Quality of social interaction67 [60, 80]67 [60, 87]67 [53, 80]67 [60, 80]0.772
  Social support67 [67, 100]67 [67, 100]67 [67, 100]67 [50, 100]0.902
  Social function75 [63, 100]75 [50, 100]75 [38, 100]63 [50, 75]0.021c
  1. Abbreviations: GS Gait speed; HS Handgrip strength; K-MMSE Korean-version of mini-mental state exam; BDI Beck’s depression inventory; KD-QOL Kidney disease quality of life
  2. *Charlson comorbidity score and Liu comorbidity score are adapted from reference 25 and 26
  3. The detailed information regarding the list of questionnaire can be checked in reference 28–30
  4. ap < 0.05, Normal GS and HS vs. Normal GS and low HS; bp < 0.05, Normal GS and HS vs. Low GS and normal HS; cp < 0.05, Normal GS and HS vs. Low GS and HS; dp < 0.05, Normal GS and low HS vs. Low GS and normal HS; ep < 0.05, Normal GS and low HS vs. Low GS and HS