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Abstract
The basic objective of this paper is to evaluate an age-comorbidity index in a cohort
of patients who were originally enrolled in a prospective study to identify risk factors
for peri-operative complications. Two-hundred and twenty-six patients were enrolled
in the study. The participants were patients with hypertension or diabetes who underwent
elective surgery between 1982 and 1985 and who survived to discharge. Two-hundred
and eighteen patients survived until discharge. These patients were followed for at
least five years post-operatively. The estimated relative risk of death for each comorbidity
rank was 1.4 and for each decade of age was 1.4. When age and comorbidity were modelled
as a combined age-comorbidity score, the estimated relative risk for each combined
age-comorbidity unit was 1.45. Thus, the estimated relative risk of death from an
increase of one in the comorbidity score proved approximately equal to that from an
additional decade of age. The combined age-comorbidity score may be useful in some
longitudinal studies to estimate relative risk of death from prognostic clinical covariates.
Keywords
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Article info
Publication history
Received:
April 12,
1994
Identification
Copyright
© 1994 Published by Elsevier Inc.
