eCite Digital Repository

Roles of nonclinical and clinical data in prediction of 30-day rehospitalization or death among heart failure patients


Huynh, QL and Saito, M and Blizzard, CL and Eskandari, M and Johnson, B and Adabi, G and Hawson, J and Negishi, K and Marwick, TH, for the Marathon Investigators, Roles of nonclinical and clinical data in prediction of 30-day rehospitalization or death among heart failure patients, Journal of Cardiac Failure, 21, (5) pp. 374-381. ISSN 1071-9164 (2015) [Refereed Article]

Copyright Statement

2015 Elsevier Inc. All rights reserved.

DOI: doi:10.1016/j.cardfail.2015.02.002


Background: Selecting heart failure (HF) patients for intensive management to reduce readmissions requires effective targeting. However, available prediction scores are only modestly effective. We sought to develop a prediction score for 30-day all-cause rehospitalization or death in HF with the use of nonclinical and clinical data.

Methods and Results: This statewide data linkage included all patients who survived their 1st HF admission (with either reduced or preserved ejection fraction) to a Tasmanian public hospital during 2009-2012. Nonclinical data (n = 1,537; 49.5% men, median age 80 y) included administrative, socioeconomic, and geomapping data. Clinical data before discharge were available from 977 patients. Prediction models were developed and internally and externally validated. Within 30 days of discharge, 390 patients (25.4%) died or were rehospitalized. The nonclinical model (length of hospital stay, age, living alone, discharge during winter, remoteness index, comorbidities, and sex) had fair discrimination (C-statistic 0.66 [95% confidence interval (CI) 0.63-0.69]). Clinical data (blood urea nitrogen, New York Heart Association functional class, albumin, heart rate, respiratory rate, diuretic use, angiotensin-converting enzyme inhibitor use, arrhythmia, and troponin) provided better discrimination (C-statistic 0.72 [95% CI 0.68-0.76]). Combining both data sources best predicted 30-day rehospitalization or death (C-statistic 0.76 [95% CI 0.72-0.80]).

Conclusions: Clinical data are stronger predictors than nonclinical data, but combining both best predicts 30-day rehospitalization or death among HF patients.

Item Details

Item Type:Refereed Article
Keywords:algorithm, cardiac failure, readmission, risk score, quality
Research Division:Biomedical and Clinical Sciences
Research Group:Cardiovascular medicine and haematology
Research Field:Cardiology (incl. cardiovascular diseases)
Objective Division:Health
Objective Group:Clinical health
Objective Field:Clinical health not elsewhere classified
UTAS Author:Huynh, QL (Dr Quan Huynh)
UTAS Author:Saito, M (Dr Makoto Saito)
UTAS Author:Blizzard, CL (Professor Leigh Blizzard)
UTAS Author:Negishi, K (Dr Kazuaki Negishi)
UTAS Author:Marwick, TH (Professor Tom Marwick)
ID Code:100728
Year Published:2015
Web of Science® Times Cited:40
Deposited By:Menzies Institute for Medical Research
Deposited On:2015-05-27
Last Modified:2017-11-02

Repository Staff Only: item control page