The U.S. Centers for Disease Control and Prevention (CDC) maintains statistics and analysis on disability and health disparities. This source offers the most recent government-sourced statistics for the United States pertaining to disability and health disparities; the latest update for the CDC page was August 2018. That page links out to the Disability & Health Data System, which allows users to drill down into state-by-state statistics, offers an automated tool for making comparisons across locations, and includes a webinar user guide for newbies. These are both great resources for including statistics in your coverage of disability-related stories about health or for finding story ideas based on results you turn up in location-by-location comparisons.
