National Health Interview Survey
Welcome to the National Health Interview Survey, also called NHIS.
NHIS is the oldest household health survey in the United States, having started in 1957. NHIS data show whether Americans’ health is getting better or worse, and which groups of people are most likely to have health problems.
People use NHIS data to learn about Americans’ access to health care, the quality of their health care, and how well the health care system meets people’s needs. This information helps the Centers for Disease Control and Prevention and other organizations develop programs to keep America healthy.