Methods.We evaluated changes in the use of recommended preventive services from 2009 (before the implementation of ACA cost-sharing provision) to 2011/2012 (after the implementation) in the Medical Expenditure
Panel Survey, a nationally representative household interview survey in the US. Specifically, we examined: blood
pressure check, cholesterol check,flu vaccination, and cervical, breast, and colorectal cancer screening, controlling for demographic characteristics and stratifying by insurance type.