Common Quality Issues with Revised Birth Certificate Data

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• Common Quality Issues with Revised Birth
  Certificate Data
• David Justice
• Data Acquisition and Evaluation Branch
• Division of Vital Statistics, NCHS

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2007 The Scales Tipped
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Median Reporting Lag
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Infant Death Underreporting

• New item Infant Alive at Time of Report
• If response is NO then a matching infant death
  record should be identified
• March 2006 Article in DVS newsletter
• July 2006 Presentation at VSCP Meeting

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Infant Death Underreporting

• January 2007 DAEB sent Infant Alive reports
  to 2005 birth revisers
• March 2007 DAEB sent Infant Alive reports to
  all 2006 revisers
• April 2007 Article sent by Charlie Rothwell
• May 2007 DAEB sent lt 500g reports to
  non-revisers

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Infant Death Underreporting

• Positive response to reports from DAEB
• Identify infant deaths that have not been
  reported or linked
• Identify birth records where Infant Alive is
  reported incorrectly
• Identify birth records that should have been
  reported as a fetal death

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Data Quality Issues

• Out of range values and inconsistencies
• State system not adhering to specs
• State specs different from NCHS specs
• NCHS specs not detailed enough
• Some problems not identifiable on an individual
  record basis

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Data Quality Issues

• 1 APGAR SCORE AT 10 MINUTES
• Depends on Apgar at 5 Minutes
• Only if Apgar at 5 Minutes is lt 6
• Code 88 is used when Apgar at 5 minutes is 06 -
  10

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Data Quality Issues

• HISPANIC ORIGIN OF FATHER
• Unknown level inconsistent with other fathers
  information (race, education, dob)
• Defaulting to NNNN when unmarried instead of
  UUUU

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Data Quality Issues

• 3 INVALID FIPS CODES
• Blanks are invalid
• Use ZZ for country or state
• Use 999 for county
• Use 99999 for place

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Data Quality Issues

• METHOD OF DELIVERY Attempted Forceps, Vacuum
• Vs. Final Route and Method of Delivery Forceps,
  Vacuum
• Forceps/Vacuum should be reported in only one
  place

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Data Quality Issues

• RISK FACTOR Previous C-Section
• Bad combinations with of C-sections
• Yes, 00
• No, 99 or reported number
• Unknown, 00 or reported number

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Data Quality Issues

• 6 RISK FACTOR Infertility Treatment
• Subcategories added end of 2003
• If infertility treatment Y then report Y, N or
  U for subcategories
• Otherwise, subcategories X or U

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Data Quality Issues

• 7 MONTH DEFAULTS ON DATES
• Other Pregnancy Outcome
• Last Live Birth
• First Prenatal Care Visit
• Month reported as 01 instead of 99 when unknown
  month

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Data Quality Issues

• OUTLYING VALID VALUES
• Mothers Height in Feet (1,2,7,8)
• Plurality (gt6)

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Not Classifiable Levels

• Contract Standards
• Reviser Levels are being monitored
• Available on VSCP Website
• 2007 levels have been added
• Some items with 0 unknowns?

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Facility Reports

• All states are submitting facility codes on the
  revised file
• 2005 Joint presentation by NCHS and N.Y. State
• NCHS can produce reports by facility for any
  values, particularly unknowns

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Void Flags

• Void Lists not required if void flag used
  properly
• Not used by all revised states
• Annual Final Void List still required

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2008 Documentation

• Deliverable each Fall plan to request a full
  set from all States in 2008
• Include certificates, worksheets, and system
  documentation useful for 1st time revisers
• NCHS would like to review drafts in advance

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Questions or Concerns?

• DAEB Statistician or Vital Statistics Specialist
• David Justice
• DVS/DAEB
• Research Triangle Park, NC
• djustice_at_cdc.gov
• 919 541 0589