Data on Health and Well-being of American Indians, Alaska Natives, and Other Native Americans. National Mortality Followback Survey (NMFS)

12/01/2006

Sponsor: U.S. Department of Health and Human Services (DHHS)/Centers for Disease Control and Prevention (CDC)/National Center for Health Statistics (NCHS)
Description: The National Mortality Followback Survey Program (NMFS), begun in the 1960s by NCHS, draws a sample of U.S. residents who die in a given year and supplements their death certificate information with information from the next of kin or another person familiar with the decedents life history. This information, sometimes enhanced by administrative records, provides a unique opportunity to study the etiology of disease, demographic trends in mortality, and other health issues.
Relevant Policy Issues: Measurement of Health Status and Key Health Disparities.
Data Type(s): Survey
Unit of Analysis: Individual
Identification of AI/AN/NA: In the 1993 data, death certificate information is coded into the following categories:
  • White
  • Black
  • American Indian, Eskimo, Aleut (AI/AN)
  • Asian and Pacific Islander
  • Could not match
AI/AN/NA Population in Data Set: In the 1993 NMFS data, out of 22,957 total unweighted cases, 205 unweighted cases are identified as AI/AN.
Geographic Scope: The geographic scope of the study is national. (South Dakota did not participate in 1993.) Analysis (in the 1993 data) is also possible by region and by size of county.
Date or Frequency: The 1993 NMFS is the sixth in a series of surveys, first initiated by NCHS in the early 1960s. Data are available for both the 1993 NMFS and the 1986 NMFS.
Data Collection Methodology: The sampling frame for the 1993 NMFS is the 1993 Current Mortality Sample (CMS). The CMS is a 10 percent systematic random sample of states death certificates. The proxy respondent questionnaire is completed through a telephone or in-person interview.
Participation: Optional, without incentives
Response Rate: The overall response rate was 83 percent.
Sampling Methodology: The sampling frame for the 1993 NMFS is the 1993 Current Mortality Sample (CMS). The CMS is a 10 percent systematic random sample of states death certificates. A sample of 22,957 death certificates from the Current Mortality Sample was drawn. The sample was selected by broad age groups (15 years or older), two racial groups (black vs. nonblack), and gender within 12 causes of death (suicide; homicide; injuries to motor vehicle drivers, pedestrians, and motorcycle owner operators; other motor vehicle injuries; non-motor vehicle injuries; HIV; cancer; chronic obstructive pulmonary disease; heart disease; alcohol abuse; drug abuse; and all other causes). In order to produce more robust analysis, black decedents, certain causes of death, and certain age groups were oversampled (45.5 percent of all cases).
Analysis: To produce national estimates, researchers must use weights and adjust for the complex sampling design for all analyses.
Authorization: The 1993 NMFS was conducted under the authorization of the Public Health Service Act (Title 42, United States code, Section 242k).
Strengths: Data are collected on key policy issues including health status and health disparities. Documentation is thorough and available online.
Limitations: The sample size for AI/AN is small.
Access Requirements and Use Restrictions: The 1986 and 1993 data from the NMFS are available on CD-ROM at no charge. The 1993 NMFS data are also available by directly downloading from the CDC website.
Contact Information: For questions concerning the 1993 National Mortality Followback Survey or to obtain a CD-ROM, contact:

Mortality Statistics Branch
Division of Vital Statistics
National Center for Health Statistics
Centers for Disease Control and Prevention
3311 Toledo Road, Room 7318
Hyattsville, Maryland 20782
(301) 458-4666

The data can be directly downloaded from: http://www.cdc.gov/nchs/about/major/nmfs/nmfs.htm.
Documentation for the 1993 survey is also available at this website.

 

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