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 …

Background It is important to find a comorbidity measure with better performance for use with
administrative data. The new method proposed by Elixhauser et al. has never been …

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 …

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 construct an updated comorbidity index (Patient Register Index [PRI]) using
national data collections from Norway and compare its predictive ability of 1-year mortality …

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 Earlier comorbidity measures have been developed or validated using the North
American population. This study aims to compare five Charlson or Elixhauser comorbidity …

Background The performance of comorbidity measures for predicting mortality in chronic
disease populations and using ICD-9 diagnosis codes in administrative health data has …

Objective The objective of the study was to develop and validate two outcome-specific
morbidity indices in a population-based setting: the Mortality-Related Morbidity Index …

Background Understanding how comorbidity measures contribute to patient mortality is
essential both to describe patient health status and to adjust for risks and potential …