Bmc Med Inform Decis
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Bmc Med Inform Decis · Nov 2013
The predictability of claim-data-based comorbidity-adjusted models could be improved by using medication data.
Recently, claim-data-based comorbidity-adjusted methods such as the Charlson index and the Elixhauser comorbidity measures have been widely used among researchers. At the same time, there have been an increasing number of attempts to improve the predictability of comorbidity-adjusted models. We tried to improve the predictability of models using the Charlson and Elixhauser indices by using medication data; specifically, we used medication data to estimate omitted comorbidities in the claim data. ⋯ Prediction models using Charlson index or Elixhauser comorbidity measures might be improved by including comorbidities inferred from medication data.