Table 1.
Baseline characteristics of Elective Outpatient Start cohort
| Variable | All Elective Outpatient Starts | PD | HD | Standardized Difference |
|---|---|---|---|---|
| Total number of patients | 6573 | 2035 | 4538 | |
| Mean age (SD; range) | 62.6 (15.3; 18 to 95) | 61.5 (15.2; 18 to 92) | 63.1 (15.3; 18 to 95) | 0.10 |
| Median age | 65 | 64 | 66 | 0.10 |
| Acute kidney injury to start dialysis (%) | 28 (0.4) | 0 (0) | 28 (0.6) | 0.09 |
| Predialysis care of >12 months (%) | 5621 (85.5) | 1736 (85.3) | 3885 (85.6) | 0.01 |
| Mean length of predialysis care, days (SD; range) | 1732.5 (1306.4; 121 to 5364) | 1751.5 (1322.5; 121 to 5297) | 1724.1 (1299.2; 121 to 5364) | 0.02 |
| Median length of predialysis care, days | 1421 | 1455 | 1400.5 | 0.02 |
| Mean number of predialysis visits in 2 years prior to start (SD; range) | 9.3 (5.3; 0 to 48) | 9.5 (4.8; 0 to 29) | 9.5 (5.5; 0 to 48) | 0.01 |
| Median number of predialysis visits | 9.0 | 9 | 9 | 0.01 |
| Hospitalized in past year (%) | 3176 (48.3) | 1067 (52.4) | 2109 (46.5) | 0.12 |
| Mean number of hospitalizations (SD; range) | 0.84 (1.2; 0 to 11) | 0.84 (1.1; 0 to 8) | 0.83 (0 to 11) | 0.01 |
| Median number of hospitalizations | 0 | 1 | 0 | 0.01 |
| Mean number of hospital days (SD; range) | 6.7 (13.9; 0 to 291) | 6.1 (13.1; 0 to 291) | 6.9 (14.2; 0 to 199) | 0.06 |
| Median number of hospital days | 0 | 2 | 0 | 0.06 |
| Congestive heart failure (%) | 1805 (27.5) | 483 (23.7) | 1322 (29.1) | 0.12 |
| Ischemic heart disease (%) | 2510 (38.2) | 733 (36.0) | 1777 (39.2) | 0.06 |
| Valvular disorder (%) | 220 (3.4) | 81 (4.0) | 139 (3.1) | 0.05 |
| Rhythm disturbance (%) | 1106 (16.8) | 316 (15.5) | 790 (17.4) | 0.05 |
| Cardiomyopathy (%) | 115 (1.8) | 31 (1.5) | 84 (1.9) | 0.02 |
| Hypertension | ||||
| no complications (%) | 4873 (74.1) | 1532 (75.3) | 3341 (73.6) | 0.04 |
| complications (%) | 2156 (32.8) | 732 (36.0) | 1424 (31.4) | 0.10 |
| Cerebrovascular disease (%) | 729 (11.1) | 192 (9.4) | 537 (11.8) | 0.08 |
| Chronic ulcer (%) | 222 (3.4) | 54 (2.7) | 168 (3.7) | 0.06 |
| Chronic obstructive Pulmonary disease (%) | 699 (10.6) | 166 (8.2) | 533 (11.8) | 0.12 |
| Disorder of lipoid metabolism (%) | 981 (14.9) | 318 (15.6) | 663 (14.6) | 0.03 |
| High-risk malignancy (%) | 296 (4.5) | 98 (4.8) | 198 (4.4) | 0.02 |
| Low-risk malignancy (%) | 336 (5.9) | 111 (5.5) | 275 (6.1) | 0.03 |
| Depression (%) | 76 (1.2) | 14 (0.7) | 62 (1.4) | 0.06 |
| Nutritional deficiency (%) | 95 (1.5) | 18 (0.9) | 77 (1.7) | 0.07 |
| Osteoporosis (%) | 309 (4.7) | 89 (4.4) | 220 (4.9) | 0.02 |
| Autoimmune disorder (%) | 702 (10.7) | 168 (8.3) | 534 (11.8) | 0.11 |
| Gastroesophageal reflux disease (%) | 269 (4.1) | 61 (3.0) | 208 (4.6) | 0.08 |
| Chronic liver disease (%) | 119 (1.8) | 30 (1.5) | 89 (2.0) | 0.04 |
| Diabetes mellitus, Ontario Diabetes Database (%) | 3255 (49.5) | 981 (48.2) | 2274 (50.1) | 0.04 |
PD, peritocal dialysis; HD, hemodialysis.