National Health Interview Survey
The National Health Interview Survey (NHIS) has monitored the health of the nation since 1957. NHIS data on a broad range of health topics are collected through personal household interviews. Survey results have been instrumental in providing data to track health status, health care access, and progress toward achieving national health objectives.
Data Analysis Tutorials
Review step-by-step guidance on using NHIS data
What's New
- 2020 Public Use File Data Release (4/3/2024)
- National Hospital Care Survey Demonstration Projects: Examination of Maternal Health Outcomes by Housing Assistance Status [PDF – 581 KB] (3/22/2024)
- Validation of the Enhanced Opioid Identification and Co-occurring Disorders Algorithms [PDF – 1.2 MB] (01/01/2024)
- National Hospital Care Survey Demonstration Projects: Mortality Following Nonfatal Opioid Overdose Visits to the Emergency Department [PDF – 372 KB] (5/23/2023)
- Identifying Co-occurring Disorders Among Patients With an Opioid – involved Hospital Encounter Using National Hospital Care Survey Data [PDF – 1 MB] (9/12/2022)
- National Hospital Care Survey Demonstration Projects: Characteristics and Mortality Outcomes of Opioid-Involved Hospital Encounters With Co-Occurring Disorders [PDF – 478 KB] (7/25/2022)
Learn more about NHIS:
- NHIS Brochure – English [PDF – 379 KB] | Spanish (Español) [PDF – 2 MB]
- Confidentiality Brochure – English [PDF – 446 KB] | Spanish (Español) [PDF – 397 KB]