Questionnaires, Datasets, and Related Documentation

• Survey Instruments (Questionnaires)

• Data, Questionnaires and Related Documentation

• Survey Procedures, Sample Design, Variance Estimation, and Other Methodological Studies

• Information about NHIS Supplements and Co-Sponsors

• NHIS restricted variable information, restricted and public use variable lists

• Summary of NHIS micro-data availability [PDF – 18 KB]

• NHIS micro-data files – record lengths and counts [PDF – 63 KB]

• NHIS micro-data reference information: currency of CD-ROM data files, MD5 checksums [PDF – 88 KB]