The 2015-2017 Cohort 18 Baseline was conducted using version 3.0 of the HOS survey.
The Medicare HOS program, including the Cohort 18 Baseline survey, is managed by CMS and used to assess plan performance, as detailed in the resdac.org/cms-data/files/hos-rif - ResDAC HOS documentation. If you are working with HOS data, I can help you with: B18zip
Understanding how HOS data is used for Star Ratings. Background: The history of Medicare HOS cohorts. Let me know what specific information you need next! hos_dug_c18b.pdf - HOSonline.org The 2015-2017 Cohort 18 Baseline was conducted using