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Data Products

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 icon[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 icon[PDF – 682 KB] (7/2021)
2018 NHAMCS Emergency Department Summary Tables pdf icon[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)
The 2018 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. (11/9/2020)
2017 NHAMCS Emergency Department Summary Tables pdf icon[PDF – 804 KB] are now available (1/2020)
The 2014 NAMCS Community Health Center Public Use Data File and Documentation are now available for downloading, along with SAS, Stata, and SPSS files for reading and formatting the data. A drug ingredient file and program for adding drug ingredients are also available. (12/2019)
2014 NAMCS – Community Health Center Summary Tables pdf icon[PDF – 584 KB] are now available (12/2019)
The 2017 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. (updated 11/26/2019)
NOTICE for the 2016 NAMCS Public Use Data File and 2016 NHAMCS Emergency Department Public Use Data File: A problem was found with the checkbox for CHF (Congestive Heart Failure) in the item: “Regardless of the diagnoses written above, does the patient now have:”. This checkbox is typically edited to ensure that any diagnoses of CHF reported in the survey items DIAG1-DIAG5 (Diagnosis #1 – Diagnosis #5) are also reflected in the CHF check box. It was recently discovered that the ICD-10-CM codes I50.1-I50.9 (Heart Failure) were not included in the edit. In all, 28 NAMCS records and 45 NHAMCS ED records with a diagnosis of Heart Failure reported in DIAG1-DIAG5 should have had the CHF checkbox checked but did not. More information is available here. (9/2019)
The 2016 Diagnosis Master Category List pdf icon[PDF – 444 KB] is a new research tool that can be used to classify diagnosis codes into clinically meaningful categories. (7/2019)
2016 NAMCS Summary Tables pdf icon[PDF – 793 KB] are now available. (5/2019)
An updated 2014 NAMCS Public Use Data File is now available which corrects problems found in the ‘new’ or ‘continued’ status of reported medications. Due to a data processing issue, these items were often set to missing instead of to a new or continued status. The revision affects the variables NCMED1-NCMED30, NUMNEW and NUMCONT. Pre-made SAS, SPSS, and Stata datasets have also been recreated. (4/2019)
2016 NHAMCS Emergency Department Summary Tables are now available. (3/2019)
Pre-made SPSS datasets and readme files are now available, starting with 2002, for all years of the NHAMCS Emergency and Outpatient Department Public Use Data Files. (3/2019)
Pre-made SPSS datasets and readme files are now available for the 2002-2014 NAMCS Public Use Data Files. (2/2019)
NOTICE: A new version of the 2016 NHAMCS Emergency Department public use file has been uploaded which modifies the formatting for various diagnosis codes (DIAG1-DIAG5; HDDIAG1-HDDIAG5). The earlier version contained codes which were incorrectly aggregated to a broader category within the same diagnosis group. New versions of the pre-made SAS, Stata, and SPSS files have also been uploaded. More information is available from the Public Use Data File Updates page. (1/2019)
2017 NEHRS web tables are now available. (1/2019)
Data from the 2017 National Electronic Health Records Survey are available for use in the NCHS Research Data Center (RDC). Please see the RDC file layout pdf icon[PDF – 531 KB], visit the RDC website, or contact the Ambulatory and Hospital Care Statistics Branch for more information.
The 2016 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 are also available. (1/2019)

Publications

Page last reviewed: January 12, 2022

Content source: National Center for Health Statistics