What’s New

Data Products

• 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

• Machine Learning for Medical Coding in Healthcare Surveys pdf icon[PDF – 949 KB] (10/2021)
• Enhancing Identification of Opioid-involved Health Outcomes Using National Hospital Care Survey Data pdf icon[PDF – 972 KB] (10/2021)
• Emergency Department Visit Rates for Motor Vehicle Crashes by Selected Characteristics: United States, 2017–2018 (6/2021)
• Characteristics of Office-based Physician Visits, 2018 (5/2021)
• Emergency Department Visits for Influenza and Pneumonia: United States, 2016–2018 (3/2021)
• Emergency Department Visit Rates by Selected Characteristics: United States, 2018 (3/2021)
• Respiratory Illness Emergency Department Visits in the National Hospital Care Survey and the National Hospital Ambulatory Medical Care Survey pdf icon[PDF – 993 KB] (1/2021)
• Opioid-involved Emergency Department Visits in the National Hospital Care Survey and the National Hospital Ambulatory Medical Care Survey pdf icon[PDF – 402 KB] (12/2020)
• Urban-rural Differences in Visits to Office-based Physicians by Adults With Hypertension: United States, 2014–2016 pdf icon[PDF – 276 KB] (11/2020)
• Emergency Department Visits Among Adults Aged 60 and Over: United States, 2014–2017 (6/2020)
• Physician Office Visits at Which Benzodiazepines Were Prescribed: Findings From 2014–2016 National Ambulatory Medical Care Survey pdf icon[PDF – 376 KB] (1/2020)
• Trends in Opioids Prescribed at Discharge From Emergency Departments Among Adults: United States, 2006–2017 pdf icon[PDF – 437 KB] (1/2020)
• Emergency Department Visits for Injuries Sustained During Sports and Recreational Activities by Patients Aged 5–24 Years, 2010–2016 pdf icon[PDF – 961 KB] (11/2019)
• National Hospital Care Survey Demonstration Projects: Stroke Inpatient Hospitalizations pdf icon[PDF – 919 KB] (11/2019)
• Characteristics of Asthma Visits to Physician Offices in the United States: 2012–2015 National Ambulatory Medical Care Survey pdf icon[PDF – 876 KB] (9/2019)
• Opioids Prescribed at Discharge or Given During Emergency Department Visits Among Adults in the United States, 2016 (5/2019)
• Characteristics of Office-based Physician Visits, 2016 (1/2019)