Patient characteristics in the standardized readmission ratio model
| Characteristic |
| Sex |
| Age |
| Years with ESRD |
| Diabetes as cause of ESRD |
| Body mass index at ESRD incidence |
| Days hospitalized during index admission |
| Past year comorbidities (from all claims) |
| Discharged with high-risk condition |
| HIV infection |
| Hepatitis |
| Cystic fibrosis |
| Immunity disorders |
| Sickle cell anemia |
| Disorders of pregnancy |
| Other liver disorders |
| SLE and connective tissue disorders |
| Poisoning by nonmedical substances |