The journal of nutrition, health & aging

, Volume 19, Issue 4, pp 481–488 | Cite as

Prognostic factors of long-term survival in geriatric inpatients. Should we change the recommendations for the oldest people?

  • Barbara Bień
  • K. Bień-Barkowska
  • A. Wojskowicz
  • A. Kasiukiewicz
  • Z. B. Wojszel
Article

Abstract

Objectives

Identification of optimal predictors of the 5.5-year survival in former geriatric inpatients.Investigation of the direction and shape of the relationship between mortality risk and its predictors.

Design

Retrospective survival analysis with the application of the Cox proportional hazards model.

Setting

Teaching geriatric unit.

Participants

478 inpatients (mean age 77.9; +6.8) discharged from geriatric ward during year 2008, without any exclusion criteria.

Measurements

Comprehensive geriatric assessment of numerous health variables, body mass index (BMI), clinical and biochemical findings, and outcomes of the final diagnosis. Records on the dates of deaths were obtained from the Provincial Office of Population Register.

Results

During the 5.5-year follow-up 209 (43.7%) patients died. In the multivariate setup, six risk factors with an independent impact on mortality were identified: age (p=0.036), cognitive functioning on the Blessed test (p=0.005), score on instrumental ADL (p<0.0001), score on Charlson comorbidity index (p<0.0001), cholesterol level (p<0.0001), BMI (p<0.0001), and hemoglobin level (p=0.02). The latter two predictors exhibited a significant inverted J-shaped association with mortality, i.e., considerably higher risk of death corresponds to the lower values of these variables in comparison to their higher levels.

Conclusion

Older age, worse IADL and cognitive functioning, and higher comorbidity were recognized as endangering one’s long-term survival. On the other hand, moderate obesity (BMI 36), higher cholesterol and the absence of anemia (hemoglobin 13.6 g/dL) are associated with longer survival. Therefore, irrespective of the individualized treatment and physical exercise, nutrient-dense food seems to be a key recommendation to prevent frailty or malnutrition in the oldest and comorbid population.

Key words

Long-term survival geriatric patients BMI cholesterol hemoglobin 

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Copyright information

© Serdi and Springer-Verlag France 2014

Authors and Affiliations

  • Barbara Bień
    • 1
  • K. Bień-Barkowska
    • 2
  • A. Wojskowicz
    • 1
  • A. Kasiukiewicz
    • 1
  • Z. B. Wojszel
    • 1
  1. 1.Department of GeriatricsMedical University of BialystokBialystokPoland
  2. 2.Institute of EconometricsWarsaw School of EconomicsWarsawPoland

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