Additional file 1 of Unplanned 30-day readmissions, comorbidity and impact on one-year mortality following incident heart failure hospitalisation in Western Australia, 2001–2015

Additional file 1. Supplementary Table 1. Definitions of ICD-9 and ICD-10-AM codes for identification of comorbid diseases and procedures. Supplementary Table 2. ICD-10-AM codes used to categorise the principal causes of 30-day unplanned readmissions in 30-day survivors. Supplementary Table 3. Clinical characteristics of 30-day survivors with an incident hospitalisation for heart failure between 2001-2015, stratified by sex. Supplementary Table 4. Clinical characteristics of patients with an incident hospitalisation for heart failure between 2001-2015, stratified by survival within 30 days post-discharge. Supplementary Table 5. The overall age-and sex-standardised rates and age-standardised rates by sex, per 1000 population, of 30-day unplanned readmission in patients who survived 30-days post-discharge after incident heart failure hospitalisation between 2001 and 2015.