Integrated Public Use Microdata Series (IPUMS) USA Integrated Public Use Microdata Series (IPUMS) CPS Integrated Public Use Microdata Series (IPUMS) International Integrated Public Use Microdata Series (IPUMS) Time Use Projects National Historical Geographic Information System (NHGIS) Integrated Demographic and Health Series (IDHS) Integrated Public Use Microdata Series (IPUMS) Higher Ed National Health Interview Survey (NHIS) IPUMS Terra

NHIS data are available free of charge. Before using the data, researchers must complete this registration and agree to abide by the usage license specified below. By completing this application, you agree to receive occasional email messages. Such messages will be infrequent, and we will safeguard the confidentiality of your email address.

By completing this registration, you agree to the following terms of use.

You may publish a subset of the data to meet journal requirements for accessing data related to a particular publication. Contact us for permission for any other redistribution; we will consider requests for free and commercial redistribution.
The Public Health Service Act (Section 308 (d)) provides that the data collected by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention (CDC), may be used only for the purpose of health statistical reporting and analysis.
Any effort to determine the identity of any reported case is prohibited by this law. NCHS does all it can to assure that the identity of data subjects cannot be disclosed. All direct identifiers, as well as any characteristics that might lead to identification, are omitted from the data files. Any intentional identification or disclosure of a person or establishment violates the assurances of confidentiality given to the providers of the information. Make no use of the identity of any person or establishment discovered inadvertently and advise the Director of NCHS of any such discovery (301-458-4500). Do not link these data with individually-identifiable data from NCHS or non-NCHS data files.
For information on proper citation refer to citation and use. Publications and research reports making use of NHIS should be added to our Bibliography.

IMPORTANT: These terms of use are a legally binding agreement. You can use the data only in accordance with these terms, and any other use is a violation of the agreement. Violations may result in revocation of the agreement and prohibition from using other IPUMS data. If IPUMS or our partners are harmed from your violation, you are responsible for all damages, including reasonable attorney’s fees and expenses.