| Level of variation; intraclass correlation coefficient,% | ||
|---|---|---|
| Model | Geographic region | Facility |
| Peritoneal dialysis at 90 days | ||
| Unadjusted | 1.1 | 13.8 |
| Fully adjusted | 3.4 | 9.3 |
| Reduced | 3.2 | 8.8 |
| Peritoneal dialysis at initiation of therapy | ||
| Unadjusted | 1.1 | 15.7 |
| Fully adjusted | 4.0 | 11.4 |
| Reduced | 3.7 | 10.7 |
| Peritoneal dialysis at any time | ||
| Unadjusted | 0.6 | 11.8 |
| Fully adjusted | 2.0 | 7.7 |
| Reduced | 1.7 | 7.3 |
*The analysis involved 13 geographic regions, 56 facilities and 31 778 patients. The fully adjusted model included the following covariates: for facility-level factors, percentage of patients with a central venous catheter, transplantation facility, mean serum hemoglobin and phosphate, mean distance of patient’s residence from nearest dialysis centre and number of patients served; for patient case mix, age, sex, body mass index, ethnic origin, comorbidities, distance to facility, length of predialysis care, serum hemoglobin, serum phosphate and serum albumin. The reduced model included the following covariates: for facility-level factors, percentage of patients with a central venous catheter; and for patient case mix, age, sex, body mass index, ethnic origin, cause of end-stage renal disease, comorbidities, distance to facility, length of predialysis care, serum hemoglobin and serum phosphate.