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Table 1 Background characteristics of the study participants

From: Range of plasma brain natriuretic peptide (BNP) levels in hemodialysis patients at a high risk of 1-year mortality and their relationship with the nutritional status: a retrospective cohort study in one institute

Basal factors
Gender male female total        
  Number 446 214 660        
  % 67.6 32.4 100        
Age (year) 0~ 30~ 45~ 60~ 75~ total     
  Number 6 24 115 285 230 660     
  % 1 3.6 17.4 43.2 34.8 100     
Primary disease CGN DM others total       
  Number 318 255 87 660       
  % 48.2 38.6 13.2 100       
Hemodialysis vintage < 2 2~ 5~ 10~ 15~ 20~ 25~ ≥ 30 total  
  Number 136 186 196 91 39 10 2 0 660  
  % 20.6 28.2 29.7 13.8 5.9 1.5 0.3 0 100  
Hemodialysis prescription factor
Kt/V <0.8 0.8~ 1.0~ 1.2~ 1.4~ 1.6~ 1.8~ ≥ 2.0 total  
  Number 13 20 47 110 202 152 75 41 660  
  % 2 3 7.1 16.7 30.6 23 11.4 6.2 100  
Nutrition factors
nPCR (g/kg/day) <0.5 0.5~ 0.7~ 0.9~ 1.1~ ≥ 1.3 total    
  Number 21 175 320 124 17 2 660    
  % 3.2 26.6 48.5 18.8 2.6 0.3 100    
Albumin (g/dl) <3.0 3.0~ 3.5~ 4.0~ ≥ 4.5 total     
  Number 49 235 306 69 1 600     
  % 7.4 35.6 46.4 10.5 0.1 100     
BMI (kg/m2) <16 16~ 18~ 20~ 22~ 24~ 26~ ≥ 28 total  
  Number 5 32 120 186 156 93 31 36 660  
  % 0.7 4.9 18.2 28.2 23.7 14.1 4.7 5.5 100  
Total cholesterol (mg/dl) <80 80~ 120~ 160~ 200~ ≤ 240 total    
  Number 0 68 283 193 31 1 576    
  % 0 11.8 49.1 33.5 5.4 0.2 100    
%CGR (%) <60 60~ 70~ 80~ 90~ 100~ 110~ 120~ ≥130 total
  Number 66 48 78 95 110 115 71 38 35 656
  % 10.1 7.3 11.9 14.5 16.8 17.5 10.8 5.8 5.3 100
Analysis targeting factors
BNP (pg/ml) <50 50~ 100~ 200~ 300~ 500~ ≥ 1000 total   
  Number 97 99 147 62 79 92 84 660   
  % 14.7 15 22.3 9.4 12 13.9 12.7 100   
Transthyretin (mg/dl) <15 15-20 20-25 25-30 30-35 35-40 ≥ 40 total   
  Number 32 60 143 141 130 92 59 657   
  % 4.9 9.1 21.8 21.4 19.8 14 9 100