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A one-year mortality clinical prediction rule for patients with heart failure

  • Antonio Escobar
    Correspondence
    Corresponding author at: Unidad de Investigación, Hospital Universitario Basurto, OSI Bilbao-Basurto, Avda. Montevideo 18, 48013 Bilbao, Bizkaia, Spain.
    Affiliations
    Research Unit, Hospital Universitario Basurto, Avda. Montevideo 18, 48013 Bilbao, Spain

    Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Spain

    Kronikgune, Spain
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  • Lidia García-Pérez
    Affiliations
    Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Spain

    Planning and Evaluation Service, Canary Islands Health Service, Camino Candelaria, 44. C.S. San Isidro-El Chorrillo, 38109 El Rosario, Tenerife, Spain
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  • Gemma Navarro
    Affiliations
    Epidemiology Unit, Hospital Universitari, Parc Taulí, 1, 08208 Sabadell, Barcelona, Spain
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  • Amaia Bilbao
    Affiliations
    Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Spain

    Research Unit, Hospital Universitario Basurto, Avda. Montevideo 18, 48013 Bilbao, Spain
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  • Raul Quiros
    Affiliations
    Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Spain

    Hospital Costa del Sol, Carretera Nacional 340, km 186, Marbella, Málaga, Spain
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  • On behalf of the CACE-HF Score group

      Highlights

      • We have developed a new prediction tool for mortality at 1 year for patients with heart failure.
      • This new tool has good predictive accuracy.
      • The patients are classified in four risk levels according to their score.
      • Variables included in the model are easy to achieve in routine clinical practice.
      • In addition there is a model which includes a variable about Health related quality of life.

      Abstract

      Aims

      To create and validate a clinical prediction rule which is easy to manage, reproducible and that allows classifying patients admitted for heart failure according to their one-year mortality risk.

      Methods

      A prospective cohort study carried out with 2565 consecutive patients admitted with heart failure in 13 hospitals in Spain. The derivation cohort was made up of 1283 patients and 1282 formed the validation cohort. In the derivation cohort, we carried out a multivariate logistic model to predict one-year mortality. The performance of the derived predictive risk score was externally validated in the validation cohort, and internally validated by K-fold cross-validation. The risk score was categorized into four risk levels.

      Results

      The mean age was 77.2 years, 49.7% were female and there were 611 (23.8%) deaths in the follow-up period. The variables included in the predictive model were: age ≥ 75, systolic blood pressure < 135, New York Heart Association class III–IV, heart valve disease, dementia, prior hospitalization, haemoglobin < 13, sodium < 136, urea ≥ 86, length of stay ≥ 14 and Physical dimension of Minnesota Living with Heart Failure questionnaire. The AUC for the risk score were 0.73 and 0.70 in the derivation and validation cohorts, respectively, and 0.73 in the K-fold cross-validation. The percentage of mortality ranged from 8.08% in the low-risk to 58.20% in the high-risk groups (p < 0.0001; AUC, 0.72).

      Conclusions

      This model based on routinely available data, for admitted patients and with a follow-up at one year is a simple and easy-to-use tool for improving management of patients with heart failure.

      Keywords

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