Skip to main content

Table 1 Baseline demographic characteristics of the 4 groups of patients

From: Increasing high-sensitive C-reactive protein level predicts peritonitis risk in chronic peritoneal dialysis patients

  Group 1 Group 2 Group 3 Group 4
  n = 171 n = 45 n = 31 n = 80
Demographic factors     
 Mean age at the start of the study 48 51 49 55
 (range) (18–83) (20–80) (27–67) (24–80)
 Male, % 39 44 52 52
 Diabetes, % 7.0 6.7 25.8e 22.8e
 PD vintage, years 4.6 ± 3.2 5.5 ± 3.7 4.1 ± 2.9 5.3 ± 3.1
 Kt/V urea (Gotch formula) 2.14 ± 0.46 2.11 ± 0.35 2.03 ± 0.39 2.02 ± 0.33
 nPCR, g/day 1.11 ± 0.23a 1.08 ± 0.22 1.02 ± 0.23 1.00 ± 0.24
 Body mass index, kg/m2 21.9 ± 3.5b 22.8 ± 3.9 24.0 ± 3.0 24.3 ± 3.8
Clinical co-morbidity, %     
  Coronary artery disease 2 2 0 3
  Congestive heart failure 6 7 3 9
  Peripheral vascular disease 2 0 3 11
  Stroke 2 4 10 9
  Neoplasm 8 18 0 5
  Chronic lung disease 5 2 6 8
  Liver cirrhosis or hepatoma 3 0 10 4
No comorbidity, % 74 73 81 76
Recurrent peritonitis, % 5 9 0 6
Hospitalized stay, day 5 ± 11a 9 ± 14 8 ± 11 12 ± 21
Laboratory data     
  Baseline albumin, g/dL 3.80 ± 0.38 3.79 ± 0.39 3.68 ± 0.50 3.68 ± 0.42
  Final albumin, g/dL 3.83 ± 0.35a,c 3.66 ± 0.39 3.87 ± 0.40 3.67 ± 0.43
  ∆ albumin, % 1% ± 7%c −3% ± 9% 6% ± 12% a,c 0% ± 11%
  Baseline hs-CRP, mg/L, 1.49 2.10 f 9.75 g 11.6g
  (Q1–Q3) (0.84 to 2.25) (1.30 to 3.61) (7.30 to 16.1) (7.85 to17.8)
  Final hs-CRP, mg/L, 1.45 9.20 g 2.49f 12.8g
  (Q1–Q3) (0.74 to 2.39) (7.29 to 12.1) (1.36 to 3.71) (7.89 to 25.1)
  ∆ hs-CRP, % −6h 416 −80h 0h
  (Q1–Q3) (−38 to 49) (1.78 to 7.02) (−91 to −59) (−29 to 69)
  Hematocrit, % 32.2 ± 4.3c 29.7 ± 4.6 30.9 ± 3.9 30.7 ± 4.0
  Serum cholesterol, mg/dl 185 ± 39 177 ± 42 196 ± 59 184 ± 39
  Serum triglyceride, mg/dL 145 ± 83 138 ± 93 158 ± 109 174 ± 93
  Serum K, mEq/L 4.1 ± 0.7b 4.0 ± 0.6 3.9 ± 0.8 3.7 ± 0.6
  BUN, mg/dL 66 ± 17 72 ± 19 62 ± 16 64 ± 15c
  Serum Cr, mg/dL 12.1 ± 2.8 11.8 ± 3.0 11.6 ± 3.5 11.2 ± 2.6
  Serum phosphorus, mg/dL 5.2 ± 1.1 5.6 ± 1.5 5.4 ± 1.5 5.0 ± 1.2c
  Serum calcium, mg/dL 9.3 ± 0.8 9.3 ± 0.8 9.1 ± 0.9 9.4 ± 0.8
  1. Abbreviations: PD peritoneal dialysis, nPCR normalized protein catabolism rate, BUN blood urea nitrogen, Cr creatinine.
  2. Statistics:
  3. ap < 0.05, bp < 0.001 vs. group 4 (ANOVA with Bonferroni tests), cp < 0.05, vs. group 2 (ANOVA with Bonferroni tests), ep < 0.05 vs. group 2 (Chi square tests), fp < 0.05, gp < 0.001 vs. group 1 (Kruskal–Wallis one-way analysis of variance), hp < 0.001 vs. group 2 (Kruskal–Wallis one-way analysis of variance).