Table 1.
Characteristics of patients commencing PD, according to APD exposure
| Factor | CAPD Group | APD Group | P Value |
|---|---|---|---|
| Patients (n) | 2761 | 4198 | |
| RRT before PD | 992 (35.9) | 1603 (38.2) | 0.06 |
| Age at PD start (yr) | 64.0 (52.0, 73.0) | 60.0 (48.0, 70.0) | <0.001 |
| Men | 1508 (54.6) | 2506 (59.7) | <0.001 |
| Race | 0.01 | ||
| Caucasian | 2066 (74.8) | 3219 (76.7) | |
| Indigenous | 257 (9.3) | 294 (7.0) | |
| Asian | 329 (11.9) | 512 (12.2) | |
| Other | 109 (3.9) | 173 (4.1) | |
| Primary renal disease | <0.001 | ||
| GN | 646 (23.4) | 1196 (28.5) | |
| Analgesic nephropathy | 82 (3.0) | 82 (2.0) | |
| Polycystic kidney disease | 164 (5.9) | 267 (6.4) | |
| Reflux nephropathy | 75 (2.7) | 166 (4.0) | |
| Hypertension | 428 (15.5) | 569 (13.6) | |
| Diabetic nephropathy | 963 (34.9) | 1306 (31.1) | |
| Other | 235 (8.5) | 364 (8.7) | |
| Uncertain | 168 (6.1) | 248 (5.9) | |
| BMI (kg/m2) | 26.1 (22.8, 30.1) | 26.2 (22.8, 30.0) | 0.95 |
| Smoking at RRT entry | 0.99 | ||
| Never | 1322 (48.0) | 2008 (47.9) | |
| Former | 1080 (39.2) | 1641 (39.2) | |
| Current | 352 (12.8) | 539 (12.9) | |
| Diabetes | 1234 (44.7) | 1716 (40.9) | 0.002 |
| Coronary artery disease | 1114 (40.3) | 1531 (36.5) | 0.001 |
| Peripheral vascular disease | 751 (27.2) | 942 (22.4) | <0.001 |
| Chronic lung disease | 455 (16.5) | 607 (14.5) | 0.02 |
| Cerebrovascular disease | 444 (16.1) | 561 (13.4) | 0.002 |
| PET at baseline (4-h dialysate/plasma creatinine)a | 0.69 (0.14) | 0.69 (0.14) | 0.29 |
Data are presented as n (%) or median (interquartile range). The CAPD group never received APD, whereas the APD group received APD at least once. APD, automated peritoneal dialysis; BMI, body mass index; CAPD, continuous ambulatory peritoneal dialysis; PD, peritoneal dialysis; PET, peritoneal equilibrium test.
a
Missing in 29% of cohort. All other values missing in <1%.