R Program - Claims-Based Frailty Index

<p>This R program calculates CFI for each patient from analytic data files containing information on patient identifiers, ICD-9-CM diagnosis codes (version 32), ICD-10-CM Diagnosis Codes (version 2020), CPT codes, and HCPCS codes.</p> <p><b>NOTE:</b> When downloading, store <i>"CFI_ICD9CM_V32.tab"</i> and <i>"CFI_ICD10CM_V2020.tab"</i> as <i>csv</i> files (these files are originally stored as <i>csv</i> files, but Dataverse automatically converts them to <i>tab</i> files). Please read <i>"Frailty-Index-R-code-Guide"</i> before proceeding. Interpretation, validation data, and annotated references are provided in <i>"Research Background - Claims-Based Frailty Index"</i>.</p>