Catatonia. I. Rating scale and standardized examination

G. Bush, M. Fink, G. Petrides, F. Dowling, A. Francis

Research output: Contribution to journalArticle

523 Scopus citations

Abstract

To facilitate the systematic description of catatonic signs, we developed a catatonia rating examination, rating scale and screening instrument. We constructed a 23-item rating scale and a truncated 14-item screening instrument using operationalized definitions of signs ascribed to catatonia in published sources. Inter-rater reliability was tested in 44 simultaneous ratings of 28 cases defined by the presence of ≥2 signs on the 14-item screen. Inter-rater reliability for total score on the rating scale was 0.93, and mean agreement of items was 88.2% (SD 9.9). Inter-rater reliability for total score on the screening instrument was 0.95, and mean agreement of items was 92.7% (SD 4.9). Diagnostic agreement was high based on criteria for catatonia put forth by other authors. Seven per cent (15/215) of consecutively admitted patients to an academic psychiatric in-patient facility met criteria for catatonia. It is concluded that catatonia is a distinct, moderately prevalent neuropsychiatric syndrome. The rating scale and screening instrument are reliable and valid. Their use facilitates diagnosis, treatment protocols, and cross-study comparisons.

Original languageEnglish (US)
Pages (from-to)129-136
Number of pages8
JournalActa Psychiatrica Scandinavica
Volume93
Issue number2
DOIs
StatePublished - Jan 1 1996

All Science Journal Classification (ASJC) codes

  • Psychiatry and Mental health

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