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National Mortality Data Set PowerPoint PPT Presentation

National Mortality Data Set Kenneth D. Kochanek Mortality Statistics Branch Division of Vital Statistics National Center for Health Statistics Data Users Conference July 12-14, 2004 Presentation Outline National Vital Statistics System Nature of the System – Decentralized

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National Mortality Data Set

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Presentation Transcript


National Mortality Data Set

Kenneth D. Kochanek

Mortality Statistics Branch

Division of Vital Statistics

National Center for Health Statistics

Data Users Conference

July 12-14, 2004


Presentation Outline

  • National Vital Statistics System

  • Nature of the System – Decentralized

  • Role of the States

  • Role of NCHS

  • Role of the World Health Organization (WHO)

  • Mortality Data

    • Underlying Cause-of-Death Data

      • Advantages of Underlying Cause-of-Death Data

      • Limitations of Underlying Cause-of-Death Data

    • Multiple Cause-of-Death Data

      • Entity Axis Applications

      • Record Axis Applications

    • Electronic Death Certificate

  • Data Dissemination


The National Vital Statistics System is decentralized

There are no laws at the national level requiring the collection of vital statistics data

Statistics that are produced by NCHS are based on information obtained from certificates filed in the States where events occur

Cooperation between NCHS and the States is governed by contracts of agreement

Nature of the National Vital Statistics System

SOURCE: CDC/NCHS


State laws govern filing of certificates and reports

States produce their own certificates and reports

States code the information

Vital Statistics Cooperative Program (VSCP)

Availability of certificates and reports

Role of States

SOURCE: CDC/NCHS


To compile and publish national and sub-national vital statistics

To promote coherence and uniformity of the data collected through the VSCP

Role of NCHS

SOURCE: CDC/NCHS


Model law

Handbooks

Training and instruction manuals

Various publications

Standard certificates and reports

Quality control

Promote Data Quality

SOURCE: CDC/NCHS


Mortality Data

  • Mortality statistics are based on information from the approximately 2.3 million death certificates filed each year in the 50 States and the District of Columbia

  • The Death Certificate serves two very different purposes


A legal document regarding the facts and circumstances of a death

A statistical resource providing information on characteristics of the decedent

Death Certificate

SOURCE: CDC/NCHS


Promoting standardization of mortality statistics through the International Classification of Diseases (ICD)

Compiling international mortality statistics

Role of World Health Organization

SOURCE: CDC/NCHS


Provides standard definitions

Prescribes the format for cause-of-death information on the death certificate

Describes how death certificate should be completed

Provides rules for selecting the underlying cause of death

Role of ICD

SOURCE: CDC/NCHS


“The disease or injury which initiated the chain of morbid events leading directly to death, or

The circumstances of the accident or violence that produced the fatal injury.”

Underlying Cause of Death

SOURCE: CDC/NCHS


ACME: Automated Classification of Medical Entities

TRANSAX: Translation of Axes

MICAR: Mortality Medical Indexing, Classification and Retrieval

SuperMICAR

Computer Software

SOURCE: CDC/NCHS


Simple and one dimensional

Conceptually easy to understand

Well-accepted measure of mortality

Useful to public health officials

Advantages of Underlying Cause of Death

SOURCE: CDC/NCHS


Only one disease selected

Arbitrary selection

Excludes information

Certifier mistakes

Only as good as the information on the death certificate

Limitations of Underlying Cause of Death

SOURCE: CDC/NCHS


Portrays the number of deaths in which a given condition is a significant factor contributing to death, if reported

Portrays the Interaction of diseases

Contains two fields:

Record Axis

Entity Axis

Multiple Cause of Death

SOURCE: CDC/NCHS


Relationships among conditions

Accuracy of certification reporting

Testing traditional assumptions of underlying cause selection

Entity Axis Applications

SOURCE: CDC/NCHS


Classifiable in manner like the underlying cause of death

Best representation of ICD codes

Record Axis Applications

SOURCE: CDC/NCHS


Certifier and funeral director data entry in electronic form, including

prompts

tutorials

querying for incomplete or uninformative terms

querying for implausible cause of death sequences

Electronic Death Certificate (EDC)

SOURCE: CDC/NCHS


Preliminary Report

Final Report

Monthly National Vital Statistics Reports

Special reports

Public use micro data – CD-ROM

Confidentiality

Data Dissemination

SOURCE: CDC/NCHS


CD-ROM’s

  • Mortality Public Use Data Sets

    • ASCII Dump CD-ROM’s 1968-2001

    • SETS CD-ROM’s 1991-98

  • Compressed Mortality File (CMF)


Mortality Data from the National Vital Statistics System website:http://www.cdc.gov/nchs/about/major/dvs/mortdata.htm


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