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Table 2 Univariate and multiple stepwise regression analysis for the TUG

From: Carnitine deficiency is associated with decreased exercise activity in hemodialysis patients

Variables Univariate Multiple stepwise regression
β SE P value β SE P value
Age .341 .022 0.039    
Sex − .008 .627 0.963    
BMI .064 .078 0.707    
HD duration − .215 .005 0.201    
Hemoglobin .359 .186 0.029    
Serum albumin − .111 1.275 0.518    
AST −.010 .041 0.954    
ALT .095 .042 0.577    
BUN − .389 .020 0.017    
Serum Cr − .607 .105 0.001 − .501 .107 0.001
Uric acid − .393 .182 0.016    
Corrected Ca − .036 .515 0.834    
Phosphate − .262 .226 0.117    
Total chol − .475 .009 0.003 − .293 .008 0.041
HDL-chol − .267 .022 0.111    
LDL-chol − .415 .013 0.011    
Triglycerides − .072 .003 0.670    
CRP − .139 1.058 0.413    
Whole PTH − .156 .003 0.355    
NT-pro BNP .429 .000 0.008    
Free carnitine − .347 .040 0.035    
Kt/V .101 .887 0.553    
  1. β standardized regression coefficients, SE standard error. r2 = 0.443
  2. TUG time-up-and-go test, BMI body mass index, AST aspartate transaminase, ALT alanine amino transferase, BUN blood urea nitrogen, HD hemodialysis, Cr creatinine, Ca calcium, Total chol total cholesterol, HDL-chol high-density lipoprotein cholesterol, LDL-chol low-density lipoprotein cholesterol, CRP C-reactive protein, Whole PTH whole parathyroid hormone, NT-pro BNP N-terminal pro B-type natriuretic peptide,