Methods
youth-onset T1D, T2D
All participants or their parents or guardians provided written informed consent or assent as appropriate for each participant’s age and according to local guidelines. Twenty-eight Institutional Review Boards approved the present cohort study (7 for the SEARCH study and 21 for the TODAY study; eAppendix in The SEARCH study cohort was recruited from the population-based SEARCH Registry, which since 2002 has continuously ascertained youth-onset T1D and T2D cases from Colorado, selected Southwestern American Indian reservations in Arizona and New Mexico, Ohio, Washington, South Carolina, and California.As previously described,In both the SEARCH and TODAY studies, demographic data, medical history, and current medications were self-reported, and HbAThe SEARCH and TODAY studies jointly developed an interviewer-administered survey to collect economic data in each study cohort (eTable 1 in With the implementation of the Affordable Care Act, many states expanded health care coverage to eligible residents through Medicaid expansion. Participants in both studies were classified as residents of states with Medicaid expansion or without Medicaid expansion at the time of survey administration