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Renard diagnostic interview. Its reliability and procedural validity with physicians and lay interviewers

J E Helzer, L N Robins, J L Croughan

    Archives of General Psychiatry
    |April 1, 1981
    PubMed
    Summary

    The Renard Diagnostic Interview (RDI) shows high reliability and validity when administered by psychiatrists and trained lay interviewers. This psychiatric diagnostic tool is suitable for both clinical and research settings.

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    Area of Science:

    • Psychiatry
    • Clinical Psychology
    • Medical Diagnostics

    Background:

    • Reliable and valid psychiatric diagnostic interviews are crucial for both clinical practice and research.
    • Existing instruments may require specialized training, limiting their use by non-psychiatric physicians and lay interviewers.
    • The Renard Diagnostic Interview (RDI) was developed to address this gap.

    Purpose of the Study:

    • To evaluate the interrater reliability of the Renard Diagnostic Interview (RDI).
    • To assess the procedural validity of the RDI when compared to a standard psychiatric interview.
    • To determine if lay interviewers can accurately administer the RDI after brief training.

    Main Methods:

    • Psychiatric inpatients were interviewed using a standard departmental research interview.

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  • The same patients subsequently underwent the Renard Diagnostic Interview (RDI) administered by pairs of psychiatrists, lay interviewers, or one of each.
  • Diagnostic concordance between the two RDI interviews was used to estimate reliability; concordance with the standard interview estimated procedural validity.

    • Main Results:

    • High interrater reliability was found for the Renard Diagnostic Interview (RDI).
    • High procedural validity was demonstrated when comparing RDI diagnoses to the standard interview.
    • Lay interviewers achieved accurate diagnostic information using the RDI after minimal training.

    Conclusions:

    • The Renard Diagnostic Interview (RDI) is a reliable and valid psychiatric diagnostic instrument.
    • The RDI can be effectively administered by non-psychiatric physicians and trained lay interviewers.
    • The RDI has significant potential for both clinical applications and research endeavors in psychiatry.