At a glance
- Find survey methods, questionnaires, and other resources used to collect 2025 National Health Interview Survey (NHIS) data.
- Access important technical information to help you understand, use, and analyze 2025 NHIS data.
Overview
Resources on this page provide information about the 2025 National Health Interview Survey (NHIS) data collection, its participants, and its protocols, as well as analytic notes and references. They will help you understand, analyze, and use the 2025 NHIS data.
Restricted data
- Researchers can access restricted NHIS data through the National Center for Health Statistics Research Data Center.
- Restricted-use variable access
- Restricted-use geography code
Find more
- 2025 NHIS Questionnaires, Datasets, and Documentation
- 2024 NHIS Questionnaires, Datasets, and Documentation
- 2023 NHIS Questionnaires, Datasets, and Documentation
- 2022 NHIS Questionnaires, Datasets, and Documentation
- 2021 NHIS Questionnaires, Datasets, and Documentation
- 2020 NHIS Questionnaires, Datasets, and Documentation
- 2019 NHIS Questionnaires, Datasets, and Documentation
Content Source
National Center for Health Statistics
About This Page
Published: June 24, 2025
Updated: August 27, 2026
This page was last updated on this date. Updates may include minor edits, image changes, or other modifications to page content.
Reviewed: August 27, 2026
The information on this page was last reviewed by subject matter experts to ensure accuracy.