A new online tool from the Agency for Healthcare Research and Quality shows state-level trends in hospital stays for adults with Medicare, Medicaid, private insurance and the uninsured. The Fast Stats tool allows users to examine hospital stay information for about 40 states. Because it includes at least one quarter of 2014 data for 17 states, it can be used to analyze the effects of Medicaid expansion and other Affordable Care Act provisions on hospital utilization levels and payment sources, the agency said. The tool currently includes hospital stay information for diabetes, asthma and congestive heart failure as well as broad condition categories. Additional conditions will be added over time and updated as new data become available, the agency said.