Body Mass Index and Hospitalization in the Elderly

José A. Luchsinger, Wei Nch Lee, Olveen Carrasquillo, Daniel Rabinowitz, Steven Shea

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

OBJECTIVES: To explore the association between body mass index (BMI) and hospital usage in the elderly. DESIGN: Retrospective cohort study. SETTING: Medicare Current Beneficiary Survey (1992-94). PARTICIPANTS: Eight thousand seven hundred fifty-four noninstitutionalized individuals aged 65 to 100 without cancer at baseline and with available data on height and weight. MEASUREMENTS: BMI categorized by quintiles and by the 1998 National Heart Lung and Blood Institute (NHLBI) BMI classification. Poisson regression was used for multivariate analyses relating BMI to number of hospitalizations, adjusting for sex, age, smoking status, and heart disease. RESULTS: During 20,464 years of observation, 1,199 individuals had 4,096 hospitalizations and 34,190 hospital days. Individuals in the lowest BMI quintile had a higher risk of hospitalization than those in the middle BMI quintile (RR = 1.22; 95% confidence interval = 1.1-1.4); stratified analyses by age revealed that this association remained for individuals aged 65 to 75. Using the NHLBI classification, underweight, overweight, mild obesity, and moderate to severe obesity were related to higher risk of hospitalizations than normal BMI in individuals aged 65 to 75. In individuals older than 75, underweight, overweight, and mild obesity were not related to a higher risk of hospitalizations. Moderate to severe obesity was related to a higher risk of hospitalization in individuals aged 75 to 89, which represented only 1.5% of the sample. CONCLUSION: BMI is not a predictor of hospitalization for most individuals aged 75 and older.

Original languageEnglish
Pages (from-to)1615-1620
Number of pages6
JournalJournal of the American Geriatrics Society
Volume51
Issue number11
DOIs
StatePublished - Nov 1 2003
Externally publishedYes

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Hospitalization
Body Mass Index
National Heart, Lung, and Blood Institute (U.S.)
Morbid Obesity
Thinness
Obesity
Medicare
Heart Diseases
Cohort Studies
Multivariate Analysis
Retrospective Studies
Smoking
Observation
Confidence Intervals
Weights and Measures
Neoplasms

Keywords

  • BMI
  • Elderly
  • Hospitalizations
  • Obesity

ASJC Scopus subject areas

  • Geriatrics and Gerontology

Cite this

Body Mass Index and Hospitalization in the Elderly. / Luchsinger, José A.; Lee, Wei Nch; Carrasquillo, Olveen; Rabinowitz, Daniel; Shea, Steven.

In: Journal of the American Geriatrics Society, Vol. 51, No. 11, 01.11.2003, p. 1615-1620.

Research output: Contribution to journalArticle

Luchsinger, José A. ; Lee, Wei Nch ; Carrasquillo, Olveen ; Rabinowitz, Daniel ; Shea, Steven. / Body Mass Index and Hospitalization in the Elderly. In: Journal of the American Geriatrics Society. 2003 ; Vol. 51, No. 11. pp. 1615-1620.
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