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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. Geographic suppression is used to protect confidentiality.
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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
Geographic suppression is used to protect confidentiality • Only Cities and Counties with populations over 250,000 are identified in the data set.
Race and Ethnicity reporting • The Linked file has more accurate reporting of Race and Ethnicity than the main Mortality file.
Birth Certificate checkbox items add many variables to the Linked file • Medical Risk Factors • Obstetric Procedures • Complications of Labor
Cohort File – data based on all deaths to infants born in a given year 2000 Cohort File = 2000 births, 2000 and 2001 deaths
Period File – data based on all infant deaths in a given year 2001 Period File = 2001 deaths, 2000 and 2001 births
Creating the Linked file at NCHS Birth Certificate -> Hospital* -> State Vital Statistics Office -> NCHS -> File and Publication Production *99% of US births
Timing and Disseminationof data • No files for 1992-1994 • 2002 Period file now in process
Linked file data available on CD ROM • Cohort file – 1985-91 and 1995-2000 • Period file available on the Perinatal CD ROM – 1995-2001
Infant mortality rate by race and ethnicity, 2001 Total U.S. Note: Rates are per 1,000 lives births.
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
Infant mortality rate: United States, 1990-2002 +3% * Preliminary data
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