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Problems and proposals for interview data in epidemiological research.

R I Horwitz, E C Yu

    International Journal of Epidemiology
    |September 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

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    This study evaluated interview data reliability in 120 patients for epidemiological research. While generally high, data errors occurred, especially for complex events and long-term recall, necessitating improved data collection strategies.

    Area of Science:

    • Epidemiology
    • Medical Statistics

    Background:

    • Reliability of patient interview data is crucial for epidemiological studies.
    • Case-control studies rely heavily on accurate historical clinical and pharmaceutical information.

    Purpose of the Study:

    • To assess the reliability of epidemiological data collected via patient interviews.
    • To identify sources of error in interview data for case-control studies.
    • To propose strategies for enhancing the quality of epidemiological interview data.

    Main Methods:

    • A case-control study involving 120 patients.
    • Data collected through interviews on two separate occasions.
    • Inclusion of clinical features (lactation, hysterectomy, diabetes, menopause, oestrogen use) and pharmaceutical history.

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    Main Results:

    • Generally high agreement rates between repeated interviews were observed.
    • Errors were more common for complex clinical events (e.g., oophorectomy with hysterectomy).
    • Recall of drug exposure from many years prior led to patient disagreement.

    Conclusions:

    • Seven sources of variability were identified (five in data collection, two in coding).
    • Strategies are proposed to improve the quality and reliability of interview data in epidemiological research.
    • Addressing data collection and coding errors is essential for robust epidemiological findings.