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Table 1 Study population characteristics

From: Differential effects of age, cytomegalovirus-seropositivity and end-stage renal disease (ESRD) on circulating T lymphocyte subsets

   ESRD patients healthy controls P-value
number of individuals   139 111  
age (yrs)*   46 (18-78) 50 (21-78) 0.13
sexe (male)   75% 48% < 0.01
CMV seropositive   53% 59% 0.10
CMV IgG (AU/mL)*   54 (6-252) 47 (6-199) 0.54
underlying kidney disease     
  hypertensive nephropathy 36.6%   
  primary glomerulopathy 20.1%   
  diabetic nephropathy 7.5%   
  polycystic kidney disease 0.0%   
  other 30.6%   
  unknown 5.2%   
type of renal replacement therapy     
  hemodialysis 41%   
  peritoneal dialysis 24.6%   
  previous kidney transplantation 4.5%   
  none 29.9%   
  1. * values are median (range), percentages are means.
  2. Distribution of gender and CMV-seropositivity within the healthy donor and ESRD patients was tested using the Chi-square test. Gender did not significantly alter the composition of T lymphocyte subsets.
  3. Comparison between the healthy donors and ESRD patients with respect to age, CMV-serology was tested using the Mann-Whitney U-test