Abt Associates conducted a review of the peer-reviewed and grey literature related to disparities and multiple chronic conditions over the last 10 years. Of the 751 peer-reviewed articles identified in our targeted PubMed search only 16 (2.1%) pertained to disparities in the MCC population. Our MEDLINE search strategy can be found in Appendix B. The purpose of the literature review was to identify recent MCC research studies and methods papers addressing health disparities. Studies that focused on individual chronic diseases were excluded from the review. The findings are described in Section 4 of the white paper.