Ambulatory Health Care Data

What’s New

Data Products

  • 2020 NAMCS Community Health Center summary tables [PDF – 287 KB] (6/2022)
  • A visit-level file based on 2020 NAMCS Community Health Center data is available for use in the NCHS Research Data Center (RDC). Please see the RDC file data dictionary [PDF – 684 KB], visit the RDC website, or contact the Ambulatory and Hospital Care Statistics Branch at ambcare@cdc.gov or 301-458-4600 for more information.
  • The 2015 NAMCS Community Health Center Public Use Data File is now available for downloading, along with SAS, Stata, and SPSS files for reading and formatting the data.  The Public Use Data File Documentation can be requested by calling 301-458-4600 or emailing ambcare@cdc.gov.  As soon as the 508-compliant version of the documentation is available, it will be posted to the website. (4/2022)
  • 2015 NAMCS Community Health Center summary tables [PDF – 1 MB] (4/2022)
  • 2019 NHAMCS – Emergency Department Summary Tables (4/2022)
    NOTE: The 2019 tables have been temporarily removed to fix formatting issues that resulted in incorrect estimates for tables 2, 4, 5, 7 and 12. (5/20/2022)
  • A new version of the 2019 NHAMCS Emergency Department public use data file was released which includes the ED weight variable (EDWT) only on the first record for each hospital (based on the HOSPCODE variable).  The initial file release included this variable on all ED records.  It is easier to produce facility-level estimates when the EDWT variable is present on only one record for each ED, and that is the way the file has traditionally been released.  To calculate facility-level estimates correctly, it is recommended that the revised version of the file be downloaded.  Visit-level estimates are unaffected.  Pre-made SAS, SPSS, and Stata datasets have also been updated to reflect this change (2/2022)
  • Two physician-level files based on data from the 2020 National Ambulatory Medical Care Survey Physician Induction Interview are available for use in the NCHS Research Data Center (RDC). One of these is a small data file which includes physician responses for Periods 3 and 4 of the 2020 NAMCS data collection. Period 3 marked the first time COVID-19 questions were able to be fielded.  Using this file allows researchers to replicate data found in the NAMCS COVID-19 Dashboard. The file includes special weights only for use with combined data from Periods 3 and 4.  The second file is the complete physician level file which contains all of the standard data elements including weights to produce annual physician-level estimates.  Data dictionaries are available for each file. Please visit the RDC website, or contact the Ambulatory and Hospital Care Statistics Branch at ambcare@cdc.gov or 301-458-4600 for more information. (12/2021)
  • The 2019 NHAMCS Emergency Department public use data file and documentation are now available for downloading, along with SAS, Stata, and SPSS files for reading and formatting the data.  In addition to the SAS, Stata, and SPSS code which can be used with the ASCII data file to create data sets, we also provide pre-made SAS, Stata, and SPSS datasets. A drug ingredient file and program to add drug ingredients to the ASCII file is also available. (11/2021)
  • A physician-level file based on data from the 2017 National Ambulatory Medical Care Survey Physician Induction Interview is available for use in the NCHS Research Data Center (RDC). Please see the RDC file data dictionary [PDF – 556 KB], visit the RDC website, or contact the Ambulatory and Hospital Care Statistics Branch at ambcare@cdc.gov or 301-458-4600 for more information. (11/2021)
  • NEW Survey: NAMCS Health Center (7/2021)
  • 2018 NAMCS Summary Tables [PDF – 682 KB] (7/2021)
  • 2018 NHAMCS Emergency Department Summary Tables [PDF – 787 KB] (5/2021)
  • The 2018 NAMCS public use data file and documentation are now available for downloading.  In addition to the SAS, Stata, and SPSS code which can be used with the ASCII data file to create data sets, we have also provided pre-made datasets for user convenience.  A drug ingredient file and program for adding drug ingredients is also available. (5/4/2021)

Publications

Page last reviewed: June 28, 2022