Medicare Advantage and Prescription Drug Plan CAHPS® Survey

Case-Mix Adjustment
     

Case-Mix Adjustment

MA & PDP CAHPS Case-Mix Variables from 1998-2018

To view the variables used as Case-Mix adjustors for the MA & PDP CAHPS Survey from 1998-2018, please download the two page Case-Mix Variables document.

MA & PDP CAHPS 2018 National Means of Case-Mix Variables

The 2018 national means of case-mix variables document has been revised. For the 2018 national means of case-mix variables, please download the 2018 National Means document dated 3/01/2019.

2018 MA & PDP CAHPS Case-Mix Adjustment Information

MA & PDP CAHPS Survey results are adjusted for certain respondent characteristics not under the control of the health or drug plan but related to the sampled member's survey responses. Case-mix adjustment is performed by CMS contractors. The case-mix coefficients are re-estimated each year based on new data. The case-mix coefficients for 2019 Star Ratings were estimated from CAHPS data collected in 2018.

For information on 2018 application of case-mix adjustment, please review the document Case-Mix Coefficients and National Means for MA & PDP CAHPS. The document provides guidance on use of the following files:  case-mix coefficient means for MA results, case-mix coefficient means for PDP results, weighted national means of case-mix adjustment variables for MA results, weighted national means of case-mix adjustment variables for PDP results.

The MA & PDP CAHPS case-mix coefficients are also publicly available in the “Medicare 2019 Part C & D Star Rating Technical Notes.”

Previous Versions

For information on 2017 case-mix coefficients and application of case-mix adjustment, please download the 2017 Coefficients for MA & PDP CAHPS file.

For information on 2016 case-mix coefficients and application of case-mix adjustment, please download the 2016 Coefficients for MA & PDP CAHPS file.

For information on 2015 case-mix coefficients and application of case-mix adjustment, please download the 2015 Coefficients for MA & PDP CAHPS file.

For information on 2014 case-mix coefficients and application of case-mix adjustment, please download the 2014 Coefficients for MA & PDP CAHPS file. This document includes the revised age categories.

 

 

This page was last modified on 3/27/2019