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Table 5 Univariate and multiple stepwise regression analysis for the 10-m walk test

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 .389 .018 0.017    
Sex − .143 .532 0.399    
BMI .075 .066 0.658    
HD duration .083 .004 0.625    
Hemoglobin −  253 .166 0.131    
Serum albumin 1.101 − .098 0.570    
AST − .029 .035 0.863    
ALT .184 .036 0.276    
BUN − .340 .018 0.040    
Serum Cr − .606 .090 < 0.001 − .347 .088 0.013
Uric acid − .552 .142 < 0.001 − .308 .129 0.022
Corrected Ca −.042 .441 0.806    
Phosphate − .346 .189 0.036    
Total chol − .455 .008 0.005    
HDL-chol − .332 .019 0.044    
LDL-chol − .401 .012 0.014    
Triglycerides − .044 .003 0.797    
CRP − .900 −.182 0.282    
Whole PTH − .139 .003 0.412    
NT-pro BNP − .539 .000 0.001 .385 .000 0.002
Free carnitine − .386 .034 0.018    
Kt/V .156 .755 0.357    
  1. β Standardized regression coefficients, SE standard error. r2 = 0.149
  2. BMI body mass index, HD hemodialysis, AST aspartate transaminase, ALT alanine amino transferase, BUN blood urea nitrogen, 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