Table 1.
Demographics and clinical characteristics in dialysis patientsa
| Parameter | Black | White | P |
|---|---|---|---|
| n (%) | 699 (3) | 19,544 (97) | |
| Age (yr; median [IQR]) | 55 (42 to 66) | 64 (50 to 73) | <0.0001b |
| Male, n (%) | 378 (54) | 11,895 (61) | 0.0003 |
| Cause of ESRD, n (%) | |||
| diabetic nephropathy | 260 (37) | 5342 (27) | <0.0001 |
| glomerulonephritis | 110 (16) | 3352 (17) | 0.3300 |
| hypertensive/ischemic renal disease | 150 (21) | 4038 (21) | 0.6100 |
| polycystic kidney disease | 27 (4) | 1169 (6) | 0.0200 |
| other | 152 (22) | 5643 (29) | <0.0001 |
| Comorbidity, n (%) | |||
| diabetesc | 42 (6) | 1322 (7) | 0.4300 |
| coronary diseased | 166 (24) | 6514 (33) | <0.0001 |
| chronic heart failure | 229 (33) | 5524 (28) | 0.0100 |
| stroke or TIA | 64 (9) | 2041 (10) | 0.2700 |
| chronic lung disease | 25 (4) | 2127 (11) | <0.0001 |
| peripheral vascular disease | 91 (13) | 3589 (18) | 0.0003 |
| malignancy | 36 (5) | 1852 (9) | 0.0001 |
| Current smoker, n (%) | 40 (6) | 2895 (15) | <0.0001 |
| Initial peritoneal dialysis modality, n (%) | 245 (35) | 5502 (28) | 0.0001 |
| Lowest quintile of SES, n (%) | 263 (38) | 4407 (23) | <0.0001 |
| Rural, n (%) | 16 (2) | 4220 (22) | <0.0001 |
| Geographic region, n (%) | |||
| Atlantic Canada | 29 (4) | 1990 (10) | <0.0001 |
| Quebec | 152 (22) | 5250 (27) | 0.0030 |
| Ontario | 458 (66) | 7502 (38) | <0.0001 |
| Manitoba | 7 (1) | 765 (4) | 0.0001 |
| Saskatchewan | 3 (0) | 697 (4) | <0.0001 |
| Alberta | 34 (5) | 1471 (8) | 0.0080 |
| British Columbia | 16 (2) | 1869 (10) | <0.0001 |
| Year of dialysis initiation, n (%) | |||
| 1990 to 1992 | 115 (16) | 4017 (21) | 0.0080 |
| 1993 to 1994 | 111 (16) | 3242 (17) | 0.6200 |
| 1995 to 1996 | 124 (18) | 3638 (19) | 0.5600 |
| 1997 to 1998 | 175 (25) | 4170 (21) | 0.0200 |
| 1999 to 2000 | 174 (25) | 4477 (23) | 0.2200 |
a
IQR, interquartile range; TIA, transient ischemic attack.
b
Kruskal-Wallis test; all others χ2 test.
c
In participants for whom the primary cause of ESRD was not diabetic nephropathy.
d
Includes angina, previous myocardial infarction, or previous coronary revascularization.