Improving reliability of the assessment of the life course of schizophrenia

Angus Thompson, Stephen Newman, Helene Orn, Roger Bland

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    1 Citation (Scopus)

    Abstract

    Objective: Life course studies of schizophrenia that have used a 3-phase model (onset, course, and outcome) have had their use restricted owing to differences in definition and methodology. The purpose of this investigation was to describe life course data in mathematical terms and to compare the results with the findings from other life course studies. Method: The study population was comprised of 128 of 137 people who were first admitted for schizophrenia to 1 of the 2 mental hospitals in Alberta in 1963 and followed until 1997 or death. Patient evaluations were based on retrospective and contemporaneous information collected from the patients and hospital files, treatment records, and family members. Mathematically derived ratings were formulated for course, outcome, and onset (pre-admission years). The distribution of the resulting 8 life course types was compared with profiles drawn from other such studies reported in the literature. Results: The use of mathematical descriptions of onset, course, and outcome produced profiles that did not closely match the results of other investigations, largely owing to inconsistency across studies. Further, the present approach to outcome measurement produced results that were less favourable than those found in other studies. Conclusions: Studies on the life course of schizophrenia could be made more comparable by specifying mathematically expressed operational definitions of onset, course, and outcome. Nonetheless, the use of the term outcome can be questioned as it implies an assessment at a specific time rather than providing a summary statement of the quality of a life.

    Original languageEnglish
    Pages (from-to)729-735
    Number of pages7
    JournalCanadian Journal of Psychiatry-Revue Canadienne De Psychiatrie
    Volume55
    Issue number11
    DOIs
    Publication statusPublished - Nov 2010

    Keywords

    • Course
    • First admission
    • Measurement
    • Onset
    • Outcome
    • Reliability
    • Schizophrenia

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