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Related Experiment Videos

Reliability of personal interview data in a hospital-based case-control study.

J P Kelly1, L Rosenberg, D W Kaufman

  • 1Slone Epidemiology Unit, School of Public Health, Boston University School of Medicine, Brookline, MA 02146.

American Journal of Epidemiology
|January 1, 1990
PubMed
Summary

Structured interviews in hospital settings yield reliable patient data for demographics and medical history. Data consistency is good for major conditions and regular medication use, but varies for intermittent use or less defined conditions.

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Area of Science:

  • Epidemiology
  • Medical Sociology

Background:

  • Assessing the reliability of patient interview data is crucial for surveillance systems.
  • Previous studies have varied in their findings on data concordance over time.

Purpose of the Study:

  • To evaluate the reliability of responses to interview questions in a multi-country hospital-based surveillance system.
  • To identify factors influencing data concordance among repeatedly interviewed individuals.

Main Methods:

  • Compared interview responses from 492 individuals interviewed more than once (1976-1982).
  • Utilized Kappa statistic and intraclass correlation coefficient to assess data reliability.
  • Analyzed reliability based on data type, medication use, and interview intervals.

Main Results:

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  • Good to excellent reliability for demographic factors (birthplace) and major medical procedures (hysterectomy).
  • Fair to good reliability for less defined conditions (cystic breast disease) and current habits (coffee consumption).
  • Variable reliability for medication use (poor for intermittent, good for regular use); longer duration of use improved consistency.

Conclusions:

  • Structured interviews by trained personnel can generate reliable demographic and medical history data from hospital patients.
  • Reliability is generally high for well-defined and regularly reported information.
  • Interview interval generally had minimal impact on reliability, with shorter intervals showing slight advantages.