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What can we learn about injury data from NCHS ?

This website provides an overview of the sources of national-level injury data available from the National Center for Health Statistics (NCHS), including details on data collection systems, surveys, and coding schemes. It also includes links to other injury data websites and information on the International Collaborative Effort on Injury Statistics.

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What can we learn about injury data from NCHS ?

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  1. U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention National Center for Health Statistics What can we learn about injury data from NCHS ? Lois A. Fingerhut NCIPC Conference, May 2005

  2. The ‘bureaucracy’ pyramid

  3. Where to find Injury Data from NCHS • Injury Fact sheet & Pamphlet • Website • Published reports • Downloadable data files

  4. New NCHS Injury web pages www.cdc.gov/nchs/injury.htm • NCHS Injury Data and Resources The purpose of this Web site is to provide an overview of the sources of national level injury data available from the National Center for Health Statistics (NCHS) and to provide details on the injury morbidity and mortality data collection systems, surveys and coding schemes used to collect and categorize the data. Links to other injury data Web sites are provided.

  5. ICE on Injury Statistics The International Collaborative Effort (ICE) on Injury Statistics is one of several international activities sponsored by CDC’s NCHS. The goal is to provide a forum for international exchange and collaboration among injury researchers who develop and promote international standards in injury data collection and analysis. A secondary goal is to produce products of the highest quality to facilitate the comparability and improved quality of injury data.

  6. ICE on Injury Statisticsbegan in May 1994….. • Australia, Austria, Canada, Denmark, England, France, Greece, Israel, The Netherlands, New Zealand, Norway, South Africa, Spain, Sweden, Switzerland, Thailand, Trinidad and the US • World Health Organization • Pan American Health Organization

  7. “Active” projects • Indicators group • ICECI and WHO • Diagnosis matrix- conversion to ICD-10 • Multiple injury profiles • Main injury from multiple cause of death • Household surveys • Occupational injury

  8. Newer projects.. • Injury severity and administrative datasets • Poisoning definition Next meeting – Cuernavaca, Mexico June 1-2, 2005 with focus on Latin American participation

  9. AdvICE list… Open to all interested… go to www.cdc.gov/nchs/about/otheract/ice/listserv.htm

  10. NCHS data sources with injury information • Mortality • National Vital Statistics System • Morbidity • National Health Care Surveys • National Hospital Discharge Survey • National Hospital Ambulatory Medical Care Survey • National Health Interview Survey • National Health and Nutrition Examination Survey

  11. NCHS Data Strengths • National coverage (census or sample) • State and county for vital statistics • Fully accessible, free of charge • Well-documented • ICD coded Limitations • Lack of timeliness • Lack of detail- ICD Coded • Hard to get state/county level data for surveys

  12. Deaths: 161 thousand Hospital Discharges: 1.8 million ED Visits: 33.0 million Other Outpatient visits: 82.3 million All other??? Burden of Injury, 2002

  13. Issues to consider with injury mortality data • Know what you want to analyze • Underlying cause of death [external cause of death codes– motor vehicle crashes, firearm deaths] • Multiple causes of death [injury diagnosis codes—internal organ injuries, penetrating wounds, poisoning substances or agents] • Timeliness of the data (or lack thereof….)

  14. Limitation of death certificates • Little or no information on … • Details on the circumstances, • Other persons involved, • Drug and alcohol involvement, • Weapon type (if applicable)

  15. Data dissemination • Annual published reports • Deaths: Injuries (2001 was 1st year) • Deaths: Final data for (year) • Deaths: Leading causes for (year) • Health US & Chart books • Tabulated data • Interactive data sources • WISQARS, WONDER • Public Use data

  16. Frameworks for Presentation • External Cause of Injury Matrix • Collaboration between Injury ICE and APHA Injury Section-began in late ’90’s. • Classifies external causes by cause and intent • For morbidity and mortality • ICD-9, 9-CM and ICD-10

  17. External Cause of Injury Matrix (in part)

  18. The Barell Matrix • Classifies body region by nature of injury • Developed for morbidity (ICD-9-CM)

  19. ICD-10 Mortality Injury Diagnosis Matrix • Similar structure to Barell matrix • Changes made in axis for diagnosis codes made this a challenge! • Mortality issues: • Any mention vs total mention of an injury • Weighted average of mentions

  20. ICD-10 Injury Mortality Diagnosis Matrix ICD-10 ‘S’ & ‘T’ codes

  21. Injury deaths according to matrix : US, 2002 Source: National Vital Statistics System

  22. But..... deaths are only the “tip” of the injury problem

  23. Morbidity data from NCHS

  24. NCHS data sources with injury information Morbidity • National Health Care Surveys • National Hospital Discharge Survey • National Hospital Ambulatory Medical Care Surveys • National Health Interview Survey • [National Health and Nutrition Exam Survey-Interview Component]

  25. New publication. . . • National Trends in Injury Hospitalizations 1979-2001 • Presents data using new tools available to categorize and analyze injury hospitalization data • STIPDA recommendations • Barell matrix • External cause matrix

  26. NHAMCS-ED injury specific variables1995-2002 • Related to injury or poisoning? • Place of injury occurrence • Intent of injury • Work-related • Cause of injury - verbatim • Cause of injury (up to 3 ICD-9-CM or External cause codes)

  27. National Health Interview Survey (NHIS) • Provides data on nonfatal, intentional and unintentional injuries for all family members • Medical treatment or advice • Collected annually since 1958 with the most recent redesign in 1997 • National probability sample

  28. NHIS - Variables • Demographics for all family members • Injury episodes (3) • Verbatim about injury/poisoning event • External cause of the injury/poisoning episode (3) • Injury/poisoning ICD-9-CM diagnosis (4)

  29. NHIS – Variables (cont.) • What person was doing at time of injury/poisoning • Where person was (home, school, etc.) • Detailed follow-up questions related to certain external cause groups • Motor vehicle, falls, etc. • Seat belt, safety seat, helmet use • Treatment locale (hospitalized, office visit, ed, phone call, etc.) • Missed work and/or school days

  30. Injury rates: Visits, Discharges and Deaths, 2001-2002 Log scale ED visits Hospital discharges Deaths Source: NCHS- NVSS, NHDS,NHAMCS

  31. Tools to Access NCHS Data

  32. Future… • Encourage you to look on the web before you begin analyses….. • http://www.cdc.gov/nchs/ • Data warehouses are appearing on all different topics some include injury data– for example, women’s health, aging, mortality statistics • Much more attention to multiple cause of death data……

  33. Thanks &please feel free to email.. LFingerhut@cdc.gov or NCHSINJURY@ CDC.GOV www.cdc.gov/nchs/injury.htm

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