Interactive Summary Health Statistics for Adults
Interactive Summary Health Statistics for Adults provide annual estimates of selected health topics for adults aged 18 years and over based on final data from the National Health Interview Survey. Estimates can be grouped by characteristics such as age, race, or sex by clicking on the "Group by" dropdown menu.
After you select the available health topics, the table will automatically be updated. The data can be viewed as a plot under the "Charts" tab, with line graphs for trends over time and grouped bar graphs for the cross-sectional view. The "Technical Notes" tab displays links to previous data releases as well as technical documentation on the measures and methodology used to produce the estimates. The generated table and graph can be downloaded with the download button 
under each tab. To view the Korn-Graubard confidence intervals, select the "95% confidence intervals" checkbox.
Notes
Based on household interviews of a sample of the civilian noninstitutionalized population.
Estimates are based on responses about the sample adult. Data came from the Sample Adult File and were weighted using the Sample Adult weight.
Unless otherwise noted, unknowns were not included in the denominators when calculating percentages.
Two-sided 95% confidence intervals are calculated using the Clopper-Pearson method adapted for complex surveys by Korn and Graubard.
In 2019, the NHIS questionnaire was redesigned to better meet the needs of data users. Due to changes in weighting and design methodology,
direct comparisons between estimates for 2019 and beyond to earlier years should be made with caution, as the impact of these changes has not been fully evaluated at this time.
Thus, estimates based on the 2019 and beyond NHIS are shown separately from estimates based on the 2015–2018 NHIS
(https://www.cdc.gov/nchs/nhis/ADULTS/www/index.htm).
Due to the COVID-19 pandemic, NHIS data collection switched to a telephone-only mode beginning March 19, 2020.
Personal visits resumed in all areas in September 2020, but cases were still attempted by telephone first through April 2021.
Starting in May 2021, interviewers were instructed to return to regular survey interviewing procedures, whereby first contact
attempts to households were made in person, with follow-up allowed by telephone. Changes to 2020 NHIS data collection resulted
in lower response rates and differences in respondent characteristics for April–December 2020.
Differences observed in estimates between 2020 and other time periods may be impacted by these changes.
For more information on the data source, methods, and definitions
used for this table, refer to Technical Notes for Interactive Summary Health Statistics— 2019-2023: National Health Interview Survey
(available from: https://wwwn.cdc.gov/NHISDataQueryTool/SHS_adult/SHS_Tech_Notes_7.15.24.pdf)
Suggested citation
Notes
Based on household interviews of a sample of the civilian noninstitutionalized population.
Estimates are based on responses about the sample adult. Data came from the Sample Adult File and were weighted using the Sample Adult weight.
Unless otherwise noted, unknowns were not included in the denominators when calculating percentages.
Two-sided 95% confidence intervals are calculated using the Clopper-Pearson method adapted for complex surveys by Korn and Graubard.
In 2019, the NHIS questionnaire was redesigned to better meet the needs of data users. Due to changes in weighting and design methodology,
direct comparisons between estimates for 2019 and earlier years should be made with caution, as the impact of these changes has not been fully evaluated at this time.
Thus, estimates based on the 2019 NHIS are shown separately from estimates based on the 2015–2018 NHIS
(https://www.cdc.gov/nchs/nhis/ADULTS/www/index.htm).
Due to the COVID-19 pandemic, NHIS data collection switched to a telephone-only mode beginning March 19, 2020.
Personal visits resumed in all areas in September 2020, but cases were still attempted by telephone first through April 2021.
Starting in May 2021, interviewers were instructed to return to regular survey interviewing procedures, whereby first contact
attempts to households were made in person, with follow-up allowed by telephone. Changes to 2020 NHIS data collection resulted
in lower response rates and differences in respondent characteristics for April–December 2020.
Differences observed in estimates between 2020 and other time periods may be impacted by these changes.
For more information on the data source, methods, and definitions
used for this table, refer to Technical Notes for Interactive Summary Health Statistics— 2019-2023: National Health Interview Survey
(available from: https://wwwn.cdc.gov/NHISDataQueryTool/SHS_adult/SHS_Tech_Notes_7.15.24.pdf)
Suggested citation
Interactive Summary Health Statistics
For more information on the data source, methods, and definitions used for these tables and charts, refer to Technical Notes for Interactive Summary Health Statistics: National Health Interview Survey (available from: https://wwwn.cdc.gov/NHISDataQueryTool/SHS_adult/SHS_Tech_Notes_7.15.24.pdf)Access to the full dataset can be found on Data.CDC.gov by clicking the link below: NHIS Adult Summary Health Statistics
Previous year Summary Health Statistics may be accessed by clicking the links below:
Interactive Summary Health Statistics for Adults (2015 to 2018)
Interactive Summary Health Statistics for Children (2015 to 2018)
Tables of Summary Health Statistics (2013 to 2018)
Summary Health Statistics Vital and Health Statistics Series 10 Reports (1997–2012 NHIS)
Current Estimates Vital and Health Statistics Series 10 Reports (1962–1996 NHIS)
