What's New

Data Products

• 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)
• The 2013 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 available. (12/2018)
• 2013 NAMCS Community Health Center Web Tables are now available (12/2018)
• We are pleased to announce the 2016 NAMCS Supplement on Culturally and Linguistically Appropriate Services public use file and documentation are now available for downloading, along with SAS, Stata and SPSS files. 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 SAS, Stata, and SPSS datasets for user convenience. (11/2018)
• The 2016 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 have also provided pre-made SAS, Stata, and SPSS (coming soon) datasets for user convenience. A drug ingredient file and program to add drug ingredients to the ASCII file are also available. (11/2018)
• The 2015 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 have also provided pre-made SAS, Stata, and SPSS datasets for user convenience. A drug ingredient file and program to add drug ingredients to the ASCII file are also available. (11/2017)
• We are pleased to announce some 2015 NAMCS public use data file enhancements. In addition to our usual SAS and SPSS statements which can be used with the ASCII data file to create SAS and SPSS data sets, we have also provided pre-made SAS and SPSS datasets for user convenience. These were created with the provided SAS statements and SPSS syntax file and should give identical results. Pre-made Stata datasets are already available for survey years 1993-2015. (9/2017)
• A slightly modified version of the 2015 NAMCS public use file has been uploaded which corrects an invalid diagnosis code on two records. More information is available from our Public Use Data File Updates page. (9/2017)
• The 2015 NAMCS public use data file and documentation are now available for downloading, along with SAS, Stata, and SPSS files for reading and formatting the data. (8/2017)
• The 2012 NAMCS Community Health Center (CHC) public use data file and documentation are now available for downloading, along with SAS, Stata, and SPSS files for reading and formatting the data. (6/2017)
• NOTICE: The 2014 NAMCS Public Use Data File Documentation and the 2014 NHAMCS-ED Public Use Data File Documentation have been updated to correct estimates for Hispanic and Non-Hispanic populations on pp. 22-25 (NAMCS) and pp. 30-33 (NHAMCS). The original versions showed 2013 estimates by mistake. (6/2017)
• The 2014 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. (4/2017)

Announcements

NAMCS Continuing Medical Education Course

The NAMCS Continuing Medical Education course is now available! The course entitled, “National Ambulatory Medical Care Survey Methods: What Clinicians Need to Know”, has been approved to offer 1.0 continuing medical education (CME) credit, 1.0 continuing nursing education (CNE) credit, and 0.1 continuing education (CEU) credit for physicians, nurses, and other health professionals who register for and complete the online module.

Publications

• 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)
• National Hospital Care Survey Demonstration Projects: Characteristics of Inpatient and Emergency Department Encounters Among Patients With Any Listed Diagnosis of Alzheimer Disease pdf icon[PDF – 458 KB] (12/2018)
• Evaluation of Transition From ICD–9–CM to ICD–10–CM Diagnosis Coding System in the National Ambulatory Medical Care Survey pdf icon[PDF – 449 KB] (11/2018)
• National Hospital Care Survey Demonstration Projects: Pneumonia Inpatient Hospitalizations and Emergency Department Visits pdf icon[PDF – 380 KB] (8/2018)
• Patient Health Information Shared Electronically by Office-based Physicians: United States, 2015 pdf icon[PDF – 377 KB] (8/2018)
• Identification of Substance-involved Emergency Department Visits Using Data From the National Hospital Care Survey pdf icon[PDF – 418 KB] (8/2018)
• Mental Health-related Physician Office Visits by Adults Aged 18 and Over: United States, 2012–2014 (6/2018)
• Characteristics of Office-based Physician Visits, 2015 (6/2018)
• Emergency Department Visits by Patients Aged 45 and Over With Diabetes: United States, 2015 (2/2018)
• Characteristics of Office-based Physician Visits, 2014 (12/2017)
• Collecting Practice-level Data in a Changing Physician Office-based Ambulatory Care Environment: A Pilot Study Examining the Physician Induction Interview Component of the National Ambulatory Medical Care Survey pdf icon[PDF – 3 MB]  [PDF – 3 MB] (11/2017)
• Characteristics of Visits to Primary Care Physicians by Adults Diagnosed With Hypertension pdf icon[PDF – 576 KB] (9/2017)
• Ambulatory Surgery Data From Hospitals and Ambulatory Surgery Centers: United States, 2010 pdf icon[PDF – 471 KB] (2/2017)
• Emergency Department Visits for Injury and Illness Among Adults Aged 65 and Over: United States, 2012–2013 (2/2017)
• Characteristics of Primary Care Physicians in Patient-centered Medical Home Practices: United States, 2013 pdf icon[PDF – 301 KB] (2/2017)
• Physician Office Visits for Attention-deficit/Hyperactivity Disorder in Children and Adolescents Aged 4–17 Years: United States, 2012–2013 (1/2017)
• Age Differences in Visits to Office-based Physicians by Adults With Hypertension: United States, 2013 (11/2016)
• State Variation in Electronic Sharing of Information in Physician Offices: United States, 2015 (10/2016)