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Table 1 Patient characteristics by peritoneal dialysis switching status

From: Timing, causes, predictors and prognosis of switching from peritoneal dialysis to hemodialysis: a prospective study

Characteristic N Non-switchers Switchers P
Total 262 197 (75.2%) 65 (24.8%) --
Demographic     
Mean age at enrollment, years 262 54.7 ± 15.4 52.0 ± 13.0 0.202
Sex (% female) 262 42.1 47.7 0.433
Race (% white) 262 83.8 72.3 0.042
Education (% high school graduate) 225 84.2 75.4 0.131
Employment (% working) 262 28.4 20.0 0.181
Marital Status (% married) 238 68.9 62.3 0.341
Distance from clinic (% >30 miles) 216 28.3 28.1 0.973
Clinical     
Smoking status (% ever smoker) 227 61.5 60.7 0.914
Modality at start, from 2728 (% HD) 256 7.8 9.4 0.693
ICED score (%) 262    0.848
   ≤ 1   50.3 46.2  
   2   25.4 27.7  
   3   24.4 26.2  
Diabetes (% diabetic) 262 49.2 58.5 0.197
History of CVD (% positive) 262 52.3 41.5 0.133
History of CHD (% positive) 262 41.1 32.3 0.207
History of CHF (% positive) 262 40.6 29.2 0.101
Primary cause of renal failure (%) 259    0.341
   Diabetes mellitus   44.8 53.9  
   Hypertension   10.8 6.2  
   Glomerulonephritis   44.3 40.0  
Late referral (% <4 months) 198 21.7 16.4 0.404
BMI, kg/m2 245 25.9 ± 5.6 28.2 ± 6.0 0.006
Residual urine output (%) 186    0.018
   Not at baseline or follow-up at 1 year   14.6 19.6  
   At baseline but not at follow-up at 1 year   17.7 33.9  
   At baseline and at follow-up at 1 year   67.7 46.4  
Laboratory     
Mean baseline albumin, g/dl 248 3.57 ± 0.44 3.64 ± 0.38 0.316
Mean baseline hemoglobin, g/dl 246 11.3 ± 1.5 11.3 ± 1.5 0.766
Median CRP (IQR), μg/dl 162 2.6 (1.1–6.2) 3.5 (1.6–5.7) 0.638
Baseline creatinine, g/dl 252 7.08 ± 2.66 7.94 ± 2.63 0.029
Baseline cholesterol, mg/dl 220 207 ± 53 210 ± 57 0.746
Baseline GFR, cc/minute/1.73 m2 254 10.5 ± 0.26 10.3 ± 0.45 0.721
  1. *By t-test (continuous variables) or χ2 test (categorical variables)