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Related Experiment Videos

Agreement in race-ethnicity coding between a hospital discharge database and another database.

A P Polednak1

  • 1Office of Policy, Planning and Evaluation, Connecticut Department of Public Health, Hartford 06134, USA.

Ethnicity & Disease
|April 6, 2001
PubMed
Summary
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Hospital discharge databases show good agreement for White and Black race coding but need improvement for Asian-Pacific Islanders and Hispanics. Birthplace and surname data can enhance accuracy.

Area of Science:

  • Health Informatics
  • Public Health
  • Epidemiology

Background:

  • Accurate race and ethnicity data are crucial for understanding health disparities.
  • Hospital discharge databases are primary sources for health statistics but may have coding inconsistencies.

Purpose of the Study:

  • To evaluate the agreement of race and Hispanic ethnicity coding between a hospital discharge database and a linked cancer registry.
  • To identify potential improvements for race-ethnicity data ascertainment in hospital records.

Main Methods:

  • Compared race-ethnicity codes for 72,276 cancer patients using linked hospital discharge data and a statewide cancer registry.
  • Utilized patient birthplace and surname information for enhanced ethnicity ascertainment, including linkage to a Spanish surname list.

Related Experiment Videos

  • Employed Kappa coefficients to quantify agreement between the two databases for various racial and ethnic categories.

    • Main Results:

    • Substantial agreement was found for White (kappa=.74), Black (kappa=.93), Hispanic ethnicity (kappa=.73), and non-Hispanic White (kappa=.83) categories.
    • Moderate agreement was observed for the Asian-Pacific Islander race category (kappa=.52).
    • Significant discrepancies were noted, with only 42% of Asian-Pacific Islanders and 62% of Hispanics in the registry having matching codes in the discharge database.

    Conclusions:

    • Existing hospital discharge databases demonstrate variable accuracy in coding racial and ethnic groups.
    • Incorporating birthplace and surname data into hospital discharge databases could significantly improve the ascertainment of specific racial-ethnic populations.
    • Enhancing data collection methods is essential for reducing health disparities and improving public health surveillance.