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[Structure of the Behavior Observation Scale-Geriatrics]

J P Gorissen1

  • 1Psychiatrisch Centrum St. Amedeus, Mortsel.

Tijdschrift Voor Gerontologie En Geriatrie
|May 1, 1994
PubMed
Summary

The Geriatric Outcome Scale-Geriatric (GOS-G) rating scale was refined using factor analysis, yielding nine behavioral dimensions. This improved scale reliably differentiates patient groups, aiding in psychiatric care.

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Area of Science:

  • Psychiatry and Gerontology
  • Behavioral Science
  • Psychometrics

Context:

  • The Geriatric Outcome Scale-Geriatric (GOS-G) is used to assess behaviors in elderly psychiatric patients.
  • Existing GOS-G scale lacked reliable item grouping, hindering its clinical application.
  • Factor analysis was employed to address this limitation in a cohort of 205 patients.

Purpose:

  • To refine the Geriatric Outcome Scale-Geriatric (GOS-G) by identifying reliable behavioral dimensions.
  • To improve the scale's utility in differentiating between demented elderly, old psychiatric inpatients, and patients with non-degenerative organic dysfunctions.

Summary:

  • Factor analysis of the 34-item GOS-G scale on 205 patients revealed nine significant dimensions: Mobility, Social activity, Aggressive and suspicious behavior, Cognition, ADL, Psychotic behavior, Disoriented behavior, Restless at night, and Depressive and anxious behavior.
  • The total GOS-G scale demonstrated strong internal consistency (alpha = .87) and test-retest reliability (r = .87).
  • Subscale internal consistency ranged from .60 to .86, and stability from .42 to .93, with significant differentiation observed between patient groups.

Impact:

  • The refined GOS-G scale provides a psychometrically sound instrument for assessing behavioral dimensions in elderly psychiatric populations.
  • The identified dimensions and validated reliability enhance the scale's diagnostic and clinical utility for distinguishing between various patient groups.
  • This research contributes to improved behavioral assessment and targeted treatment strategies in geriatric psychiatry.

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