OBJECTIVE: To develop and validate a single numerical comorbidity score for predicting
short-and long-term mortality, by combining conditions in the Charlson and Elixhauser …

OBJECTIVE: To compare the ability of commonly used measures of medical comorbidity
(ambulatory care groups [ACGs], Charlson comorbidity index, chronic disease score …

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 …

Objectives Morbidity is an important risk factor for mortality and a variety of morbidity
measures have been developed to predict patients' health outcomes. The objective of this …

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 …

Background: Adjustment for comorbidities is common in performance benchmarking and risk
prediction. Despite the exponential upsurge in the number of articles citing or comparing …

Objective. To define and improve the performance of existing comorbidity scores in
predicting mortality in Medicare enrollees. Data Sources. Study participants were two …

Background Multiple comorbidity measures have been developed for risk-adjustment in
studies using administrative data, but it is unclear which measure is optimal for specific …

Objective Some previously developed risk scores contained a mathematical error in their
construction: risk ratios were added to derive weights to construct a summary risk score. This …

Objectives To conduct a systematic review of studies reporting on the development or
validation of comorbidity indices using administrative health data and compare their ability to …