Table 1.
Characteristics of all peritoneal dialysis patients, CDP and non-CDP groups
| All (N = 148) | CDP group (n = 33) | Non-CDP group (n = 115) | P (CDP vs. non-CDP) | |
|---|---|---|---|---|
| Age at PD initiation, yr | 61.7 ± 13.0 | 57.2 ± 12.0 | 63.0 ± 13.0 | 0.02 |
| Male, n (%) | 113 (76) | 22 (67) | 91 (79) | 0.14 |
| Primary kidney disease, n (%) | 0.24 | |||
| Diabetic nephropathy | 50 (34) | 9 (27) | 41 (36) | |
| Chronic glomerulonephritis | 51 (34) | 15 (45) | 36 (31) | |
| Nephrosclerosis | 20 (16) | 2 (6) | 18 (16) | |
| Others | 27 (18) | 7 (21) | 20 (17) | |
| History of CVD, n (%) | 35 (24) | 5 (15) | 30 (26) | 0.18 |
| Use of automated PD devices, n (%) | 128 (86) | 31 (94) | 97 (84) | 0.13 |
| Systolic blood pressure, mm Hg | 133.4 ± 18.2 | 130.7 ± 21.3 | 134.3 ± 17.2 | 0.33 |
| Diastolic blood pressure, mm Hg | 76.4 ± 12.7 | 76.4 ± 15.0 | 76.4 ± 11.9 | 0.99 |
| Body mass index | 22.6 (19.8, 25.0) | 22.6 (20.8, 24.2) | 22.1 (19.8, 25.0) | 0.46 |
| Hb, g/dl | 10.8 ± 1.1 | 11.0 ± 1.0 | 10.8 ± 1.1 | 0.26 |
| Cr, mg/dl | 6.57 (5.14, 7.88) | 6.94 (5.45, 7.36) | 6.47 (5.09, 8.23) | 0.77 |
| BUN, mg/dl | 51.9 (44.9, 61.2) | 53.7 (46.5, 61.8) | 51.4 (42.9, 60.3) | 0.19 |
| cCa, mg/dl | 8.95 (8.58, 9.30) | 8.9 (8.60, 9.40) | 9.00 (8.50, 9.30) | 0.45 |
| IP, mg/dl | 4.60 (3.90, 5.30) | 4.9 (4.20, 5.50) | 4.60 (3.80, 5.25) | 0.14 |
| Alb, g/dl | 3.60 (3.30, 3.80) | 3.60 (3.30, 4.00) | 3.60 (3.25, 3.80) | 0.36 |
| CRP, mg/dl | 0.19 (0.06, 0.30) | 0.15 (0.05, 0.30) | 0.22 (0.07, 0.31) | 0.95 |
| T.chol, mg/dl | 194 (170, 219) | 186 (166, 210) | 194 (170, 221) | 0.74 |
| TG, mg/dl | 143 (101, 186) | 128 (87.3, 170) | 149 (108, 188) | 0.32 |
| β2MG, mg/dl | 17.8 (14.1, 20.7) | 18.9 (14.8, 20.1) | 17.8 (13.9, 21.0) | 0.60 |
| Renal Kt/v | 1.11 (0.85, 1.52) | 1.08 (0.83, 1.51) | 1.17 (0.87, 1.53) | 0.95 |
| Total Kt/v | 2.18 (1.89, 2.50) | 2.21 (1.95, 2.50) | 2.17 (1.87, 2.51) | 0.71 |
| D/P Cr | 0.58 (0.52, 0.66) | 0.55 (0.52, 0.63) | 0.58 (0.52, 0.67) | 0.10 |
| rGFR, ml/min per 1.73 m2 | 5.90 (4.34, 7.91) | 6.71 (4.78, 8.03) | 5.83 (4.28, 7.72) | 0.92 |
| Urine volume, ml/d | 1190 (800, 1600) | 1200 (800, 1700) | 1180 (770, 1600) | 0.63 |
| Observation duration, mo | 39.8 (19.8, 66.4) | 51.8 (32.0, 75.1) | 34.6 (18.3, 60.8) | <0.01 |
| PD+HD combination therapy, n (%) | 57 (39) | 9 (27) | 49 (43) | 0.11 |
| PD discontinuation, n (%) | 83 (56) | 15 (45) | 68 (59) | 0.16 |
| Patient with peritonitis, n (%) | 66 (45) | 14 (42) | 52 (45) | 0.78 |
| Incidence of peritonitis, per patient-year | 0.21 | 0.16 | 0.22 | — |
| mortality, n (%) | 21 (14) | 1 (3) | 20 (17) | 0.02 |
| Patient age at CDP, yr | — | 59.7 ± 12.1 | — | — |
| PD duration at CDP, mo | — | 23.0 (10.0, 42.0) | — | — |
Alb, albumin; β2MG, β2 microglobulin; BUN, blood urea nitrogen; cCa, corrected calcium; CDP, catheter diversion procedure; Cr, creatinine; CRP, C-reactive protein; CVD, cardiovascular disease; D/P Cr, the ratio of dialysate-to-plasma creatinine concentration at 4 hours; Hb, hemoglobin; HD, hemodialysis; IP, phosphate; rGFR, residual glomerular filtration rate.
Continuous data are presented as median (IQR).