Table 1.

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