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Centers for Disease Control and Prevention


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N H A M C S logoAmbulatory Health Care Data
NAMCS/NHAMCS Home | NAMCS Participants
NHAMCS Participants | What's New | Coming Soon
NAMCS Description | NHAMCS Description | Data Highlights
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(301) 458-4600



What's New?
 

Coming Soon

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National Ambulatory Medical Care 
Survey (NAMCS)
bullet graphicDescription

National Hospital Ambulatory Medical Care Survey (NHAMCS)
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Data Highlights - Selected Tables, Charts, and Graphics
bullet graphicPhysician Office Visit Data
bullet graphicOutpatient Department Visit Data
bullet graphicEmergency Department Visit Data
bullet graphicSports Injuries for Children and Young Adults
bullet graphicAmbulatory Care Data from Health, United States, 2003

Survey Methodology
An overview of the 2002 survey methodology is presented here. Please note that complete survey documentation for all survey years can be easily downloaded using the link under Public-Use Data Files, below.
Survey Instrument
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bullet graphicNHAMCS
Scope and sample design
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Data collection and processing
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Estimation procedures
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Reliability of survey estimates
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Classification systems used with the NAMCS and NHAMCS
bullet.gif (71 bytes)International Classification of Diseases
bullet graphicNational Drug Code Directory
bullet graphicReason for Visit Classification, Drug Entry List, Generic Ingredient List: These classifications are updated on an annual basis and printed in the documentation for each survey year. In addition, text formats for reason for visit, drug entry, and generic ingredient codes are all available in downloadable SAS formats for data years 1993-2002 and SPSS syntax files for 2002. The SAS and SPSS formats also include text labels for the following codes: diagnosis, cause of injury, procedures, and therapeutic class of drug.
List of survey items, 1973-2002
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Publications using NAMCS/NHAMCS data
bullet graphicNAMCS/NHAMCS Publications List - This contains a complete chronological listing of citations for all NCHS reports, journal articles, and other publications using NAMCS and NHAMCS data. It is meant to be a reference document and does not provide links to downloadable reports. View/download PDF 230 KB

bullet graphicDownloadable NCHS Reports - Selected NCHS reports are listed here, which can be viewed or downloaded.

Public-Use Data Files (micro-data) (1973-2002)
Downloadable data files:
Notice: We are pleased to offer enhanced NAMCS and NHAMCS public-use files for 1993-2002 that contain sample design variables in masked form. The initial release of the 2000-2002 public-use files includes masked sample design variables. We re-released the 1993-99 NAMCS and NHAMCS files to include these variables. For re-released files, file names and layouts are essentially the same, but the design variables have been appended to each file according to a generic file layout that is available for downloading below. Public-use files for previous years of data will be re-released with masked sample design variables on an ongoing basis. 
bullet graphicNAMCS, 1993-2002
bullet graphicNAMCS, 1973-1992
bullet graphicNHAMCS, 1992-2002
Downloadable documentation:
Notice:
For data years 1993-99, be sure to download not only the original file documentation for each year, but also the supplemental files that explain the new sample design variables that have been added to each file. The supplemental files also include descriptions of any revisions that may have been made to the original data files.
bullet graphicNAMCS, 1993-2002
bullet graphicNAMCS, 1973-1992
bullet graphicNHAMCS, 1992-2002
bullet graphicDocumentation Updates
NAMCS and NHAMCS data can also be downloaded from the
Inter-University Consortium for Political and Social Research (ICPSR).
SAS Documentation:
Notice:
We now have SAS input statements, variable labels, value labels, and format assignments available for NAMCS and NHAMCS data years 1993-2002.
bullet graphicNAMCS
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SAS Input Statements
bullet graphicSAS Variable Labels and Format Assignments
bullet graphicSAS Value Labels
bullet graphicNHAMCS
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SAS Input Statements
bullet graphicSAS Variable Labels and Format Assignments
bullet graphicSAS Value Labels
SPSS Documentation:
Notice:
SPSS syntax files for 2002 have been revised to correct some problems.
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Stata Documentation:
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Data on CD-ROM:
bullet graphicNAMCS (1990-2002)
bullet graphicNHAMCS (1992-2001)
Notice: 1995-96 CD-ROM Users
Data on public-use tape:
bullet graphicNAMCS (1973-97)
bullet graphicNHAMCS (1992-97)

Ambulatory Care Drug Database System

Census 2000 Population Estimates - How Do They Affect Visit Rates?

Staff Presentations
2004 Data Users Conference Presentations

bullet graphicOverview of the NAMCS and NHAMCS by Linda McCaig and David Woodwell
View/download PPT

bullet graphicUnderstanding and Using NAMCS and NHAMCS Data: A Hands-On Workshop (Part 1) by Susan Schappert
View/download PPT
View/download PDF SETS Workbook

bullet graphicUnderstanding and Using NAMCS and NHAMCS Data: A Hands-On Workshop (Part 2 – Using Raw-Data Files) by Don Cherry
View/download PPT
View/download PDF SAS and SUDAAN Exercises

bullet graphicUsing NAMCS Data for Injury Analysis by Linda McCaig
View/download PPT

bullet graphicCharacteristics of EDs Serving High Volumes of Safety Net Patients by Catharine Burt
View/download PPT

bullet graphicUsing Past Visit Information to Enhance Analysis of NAMCS Data by Catharine Burt
View/download PPT
View/download P
DF

bullet graphicTranslating Visits into Patients Using Ambulatory Visit Data by Esther Hing and Julia Holmes
View/download PPT

bullet graphicWomen’s Health: Data from the NAMCS and NHAMCS by Esther Hing
View/download PPT

bullet graphicAnalyzing Data on Medications Collected in the National Health Care Survey by Catharine Burt
View/download PPT

Confidentiality of NAMCS and NHAMCS Data

Frequently Asked Questions (FAQ's)

Links to Related Sites
bullet graphicAmerican Medical Association
bullet graphicAmerican Osteopathic Association
bullet graphicAmerican Hospital Association
bullet graphicAmerican College of Emergency Physicians
bullet graphicAmerican College of Osteopathic Emergency Physicians
bullet graphicInjury-ICE
bullet graphicEmergency Nurses Association
bullet graphicData Elements for ED Systems
bullet graphicNational Center for Injury Prevention & Control
bullet graphicSociety for Academic Emergency Medicine

 

NAMCS/NHAMCS Home | NAMCS Participants | NHAMCS Participants
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Contact Us
Telephone Number:
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This page last reviewed October 19, 2004

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U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES
Centers for Disease Control and Prevention
National Center for Health Statistics
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20782

(301) 458-4000