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Table 4 Univariate and multiple stepwise regression analysis for the functional reach 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 − .139 .085 0.411    
Sex − .195 2.255 0.247    
BMI .032 .285 0.850    
HD duration .051 .017 0.763    
Hemoglobin .723 − .154 0.364    
Serum albumin − .101 4.725 0.558    
AST − .162 .149 0.925    
ALT .153 − .172 0.310    
BUN .335 .076 0.043    
Serum Cr .506 .417 0.001 .385 .132 < 0.001
Uric acid .286 .696 0.086    
Corrected Ca − .059 1.885 0.728    
Phosphate .256 .831 0.127    
Total chol .124 .038 0.464    
HDL-chol .124 .084 0.463    
LDL-chol .226 .052 0.179    
Triglycerides − .201 .012 0.232    
CRP .090 3.899 0.597    
Whole PTH .020 .012 0.234    
NT-pro BNP −.240 .000 0.152    
Free carnitine .496 .136 0.002 .369 .132 < 0.001
Kt/V − .222 3.187 0.187    
  1. β standardized regression coefficients, SE standard error. r2 = 0.246
  2. BMI body mass index, HD hemodialysis, ALT alanine amino transferase, AST aspartate transaminase, 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