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J Am Geriatr Soc. 2014 Feb;62(2):342-6. doi: 10.1111/jgs.12635. Epub 2014 Jan 21.

Validation of the Charlson Comorbidity Index in acutely hospitalized elderly adults: a prospective cohort study.

Author information

1
Geriatrics Section, Department of Internal Medicine, Academic Medical Center, Amsterdam, the Netherlands.

Abstract

OBJECTIVES:

To determine whether the Charlson Comorbidity Index (CCI) predicts short- and long-term mortality.

DESIGN:

Prospective cohort study.

SETTING:

The medical department of two university hospitals and one community-based hospital.

PARTICIPANTS:

Acutely hospitalized individuals aged 65 and older with a mean age of 77.8 ± 7.9, 45.8% male (n = 1,313).

MEASUREMENTS:

In eligible persons, information on demographic characteristics, activities of daily living (modified Katz ADL Index score), and disease-related measures was collected within 48 hours after admission. Follow-up using self-reporting questionnaires was performed at 3 months and 1 year. Functional decline was defined as a decline of at least 1 point on the modified Katz ADL Index score at 12 months from baseline. Mortality data at 3 months and 1 and 5 years were collected from the municipal database.

RESULTS:

Logistic regression analysis, adjusted for age and sex, showed that participants with a CCI of 5 or more had higher 3-month (odds ratio (OR) = 3.6, 95% confidence interval (CI) = 2.1-6.4), 1-year (OR = 7.1, 95% CI = 4.2-11.9), and 5-year (OR = 52.4, 95% CI = 13.3-206.4) mortality than those with a CCI of 0. Participants with CCI scores between 1 and 4 also had greater mortality risk at 3 months and 1 and 5 years.

CONCLUSION:

The CCI independently predicts short- and long-term mortality in acutely ill hospitalized elderly adults.

KEYWORDS:

Charlson Comorbidity Index; hospital; mortality risk

PMID:
24521366
DOI:
10.1111/jgs.12635
[Indexed for MEDLINE]

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