Table 1a.
Patient characteristics, comparison across peritoneal dialysis (PD) modality
| Variable | Total | CAPD | CCPD | P Value |
|---|---|---|---|---|
| N | 129 | 62 (48.1%) | 67 (51.9%) | |
| Male gender | 70 (54.3%) | 26 (41.9%) | 44 (65.7%) | 0.007 |
| Age (years) | 60.3 ± 15.9 | 60.7 ± 15.7 | 59.8 ± 16.3 | 0.753 |
| Diabetes | 40 (31%) | 20 (32.3%) | 20 (29.9%) | 0.768 |
| Time spent on PD (months)a | 9.1 (6.4-21.5) | 8.4 (6.6-14.6) | 10.1 (6.1-28.8) | 0.278 |
| BMI (kg/m2) | 27.1 ± 5.4 | 27 ± 5.1 | 27.2 ± 5.8 | 0.853 |
| RRF present | 89 (68.9%) | 52 (83.9%) | 37 (55.2%) | < 0.001 |
| GFR (ml/min)a | 2.6 (0.6-4.5) | 3.9 (2.3-5.8) | 1.3 (0-3.6) | < 0.001 |
| Urine output (L/day)a | 0.49 (0.11-0.88) | 0.69 (0.35-1.22) | 0.26 (0-0.65) | < 0.001 |
| D/P creatinine | 0.71 ± 0.11 | 0.68 ± 0.1 | 0.73 ± 0.11 | 0.009 |
| Membrane status | 0.028 | |||
| High | 22 (17.1%) | 6 (9.7%) | 16 (23.9%) | |
| High-average | 76 (58.9%) | 36 (58.1%) | 40 (59.7%) | |
| Low-average & low | 31 (24%) | 20 (32.3%) | 11 (16.4%) | |
| PCR (g/kg/day) | 0.81 ± 0.22 | 0.83 ± 0.22 | 0.80 ± 0.24 | 0.564 |
| Serum urea (mmol/L) | 17.2 ± 5.6 | 16.9 ± 5.5 | 17.5 ± 5.6 | 0.616 |
| Plasma creatinine (μmol/L) | 784.3 ± 277.4 | 699.7 ± 249.8 | 862.5 ± 280.5 | < 0.001 |
| Serum albumin (g/L) | 36.4 ± 4.3 | 36.2 ± 4.3 | 36.6 ± 4.4 | 0.631 |
| Serum phosphate (mmol/L) | 1.62 ± 0.5 | 1.55 ± 0.4 | 1.69 ± 0.5 | 0.091 |
a
Median (interquartile range). CAPD, continuous ambulatory peritoneal dialysis; CCPD, continuous cyclic peritoneal dialysis; NIPD, nocturnal intermittent peritoneal dialysis; BMI, body mass index; RRF, residual renal function; D/P creatinine, dialysate plasma creatinine ratio at 4 h; PCR, protein catabolic rate.