Table 1.

Demographic characteristics of selected cohort compared with all incident patients during study period

CharacteristicSelected Longitudinal Subcohort (n=49)Whole Cohort (n=280)
Without Peritonitis (n=24)With Peritonitis (n=25)P ValueCombined (n=49)
Women/men (n/n)11/1310/150.6821/28120/160
Diabetes (%)29.2320.8330.629.6
Ischemic heart disease (%)12. 5160.7314.321.1
Left ventricular dysfunction (%)4.240.984.17.5
Comorbidity grade (low/medium/high) (n/n/n)11/12/19/14/20.7120/26/3107/146/27
Age (yr)52±1749±190.5151±18a55.3±16.5
Total time on PD (mo)67±1766±140.8267±15b30.9±22
Patient survival (mo)85±2180±210.3983±21b56.2±35.1
Mean baseline PSTR (4-h dialysate/plasma creatinine ratio)0.64±0.150.69±0.110.210.66±0.130.68±0.13
Baseline plasma albumin (g/dl)3.22±0.353.09±0.450.283.15±0.413.07±0.48
Peritoneal protein clearance (ml/d)78.4 (71.4–104.1)78.9 (67.9–110.2)0.7778.4 (68.9–104.1)84.8 (67.0–109.5)
  • Values expressed with a plus/minus sign are mean±SD. PD, peritoneal dialysis; PSTR, peritoneal solute transport rate.

  • a P<0.05 compared with patients treated less than 4 years.

  • b P<0.01 compared with patients treated less than 4 years.