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National Health Interview Survey (NHIS 2021)
The National Health Interview Survey (NHIS) is an annual, in-person health survey and the principal source of information about the health of the civilian, non-institutionalized, household population of the United States. The survey is conducted by the National Center for Health Statistics, part of the Centers for Disease Control and Prevention. The NHIS sample is designed and weighted to produce national estimates. NIOSH uses data from the NHIS to estimate the prevalence of various health conditions and health behaviors among US workers. The charts available here are based on data from the 2021 NHIS.
Data Updated: February 2025
Available Charts
The following data set is available from NHIS-OHS21 to chart. Select the "Create Charts" button to access the charting tool.
National Health Interview Survey (NHIS 2021)
Work Organization charts are based on data from respondents to the 2021 NHIS Occupational Health Supplement (NHIS-OHS) that were employed in the week prior to interview. The NHIS is a survey that collects data on a broad range of health topics through personal household interviews. Supplemental questions specific to occupational health were included in 2021.
Night shift work: This is not directly comparable to the 2015 data for “frequent night shift work” because the questions about overnight work were asked differently.
Shift work (any alternative shift): This is fairly comparable to the 2015 data for “any alternative shift”.
Data Updated: February 2025