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Related Experiment Videos

The St. Hans Rating Scale for extrapyramidal syndromes: reliability and validity

J Gerlach1, S Korsgaard, P Clemmesen

  • 1Department P, St. Hans Hospital, Roskilde, Denmark.

Acta Psychiatrica Scandinavica
|April 1, 1993
PubMed
Summary

The St. Hans Rating Scale (SHRS) demonstrates high reliability and validity for assessing neuroleptic-induced movement disorders in patients with tardive dyskinesia (TD). Experienced raters showed strong consistency, validating its use in clinical settings.

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Area of Science:

  • Psychiatry
  • Neurology
  • Clinical Pharmacology

Background:

  • Neuroleptic-induced movement disorders, including tardive dyskinesia (TD), are common side effects of antipsychotic medications.
  • Accurate and reliable assessment tools are crucial for monitoring these movement disorders.

Purpose of the Study:

  • To evaluate the reliability and validity of the St. Hans Rating Scale (SHRS) for assessing neuroleptic-induced hyperkinesia, parkinsonism, akathisia, and dystonia.
  • To compare the performance of the SHRS with the Abnormal Involuntary Movement Scale (AIMS).

Main Methods:

  • The St. Hans Rating Scale (SHRS) and Abnormal Involuntary Movement Scale (AIMS) were administered by 7 raters with varying experience levels to 30 psychiatric patients with tardive dyskinesia (TD).
  • Assessments were conducted three times: live evaluation, and two video-based evaluations two weeks apart.

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  • Intrarater and interrater reliability, construct validity, and convergent/divergent validity were analyzed.

    • Main Results:

    • Experienced raters achieved high intrarater reliability for SHRS (0.91-0.96 for hyperkinesia, 0.82-0.97 for parkinsonism) and AIMS (0.80-0.84).
    • Interrater reliability was also high among experienced raters for SHRS (0.89-0.95 for hyperkinesia, 0.95-0.98 for parkinsonism) and AIMS (0.76-0.85).
    • SHRS parkinsonism scale showed high construct validity; convergent validity was found between SHRS hyperkinesia and AIMS.

    Conclusions:

    • The St. Hans Rating Scale (SHRS) is a reliable and valid instrument for assessing neuroleptic-induced movement disorders, particularly parkinsonism and hyperkinesia, in patients with tardive dyskinesia (TD).
    • The scale performs well with experienced raters, supporting its clinical utility.
    • The findings support the use of SHRS as a valuable tool in psychiatric and neurological assessments of movement disorders.