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Linked Birth/Infant Death Data Set – Analyzing U.S. Infant Mortality Rates by Race and State

The Linked Birth/Infant Death Data Set by T.J. Mathews provides comprehensive statistics on infant mortality in the U.S., focusing on the years 1999-2001. It contains detailed information on medical risk factors, obstetric procedures, and complications associated with labor and delivery. The dataset includes linked files and annual period files for accurate reporting of race and ethnicity. Geographic suppression ensures confidentiality, with only larger cities and counties identified. This dataset is crucial for understanding disparities in infant mortality rates and improving maternal and infant health outcomes.

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Linked Birth/Infant Death Data Set – Analyzing U.S. Infant Mortality Rates by Race and State

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  1. The Linked Birth/Infant Death Data Set T.J. Mathews U.S. Department of Health and Human Services Centers for Disease Control and Prevention National Center for Health Statistics Division of Vital Statistics

  2. Geographic suppression is used to protect confidentiality • Only Cities and Counties with populations over 250,000 are identified in the data set.

  3. Race and Ethnicity reporting • The Linked file has more accurate reporting of Race and Ethnicity than the main Mortality file.

  4. Birth Certificate checkbox items add many variables to the Linked file • Medical Risk Factors • Obstetric Procedures • Complications of Labor

  5. Cohort File – data based on all deaths to infants born in a given year 2000 Cohort File = 2000 births, 2000 and 2001 deaths

  6. Period File – data based on all infant deaths in a given year 2001 Period File = 2001 deaths, 2000 and 2001 births

  7. Creating the Linked file at NCHS Birth Certificate -> Hospital* -> State Vital Statistics Office -> NCHS -> File and Publication Production *99% of US births

  8. Timing and Disseminationof data • No files for 1992-1994 • 2002 Period file now in process

  9. Linked file data available on CD ROM • Cohort file – 1985-91 and 1995-2000 • Period file available on the Perinatal CD ROM – 1995-2001

  10. Infant mortality rate by race and ethnicity, 2001 Total U.S. Note: Rates are per 1,000 lives births.

  11. WA ME MT ND MN VT OR NH MA ID WI NY SD CT WY MI RI PA IA NJ NE NV OH DE IN IL UT MD CO WV VA KS MO CA KY NC TN OK AZ AR SC NM GA AL MS TX LA FL AK 9.0 or more 8.0-8.9 HI 7.0-7.9 6.0-6.9 Infant mortality rates by State, 1999-2001 DC US rate = 6.9 Less than 6.0 Note: Rate is per 1,000 live births

  12. Infant mortality rate: United States, 1990-2002 +3% * Preliminary data

  13. Stay tuned: Research from the 2002 Linked Birth/Infant Death File Is the increase the result of changes in risk BEFORE birth: • Maternal characteristics (age, hypertension) • Infant characteristics (multiple births), • Characteristics of labor & delivery (induction) OR risk of death AFTER birth: • Birthweight/gestation-specific mortality • Obstetric and neonatal care

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