This paper presents a questionnaire designed to assess the aspecific treatment efficacy and subjective perceived efficacy of group therapy. A preliminary version of the instrument was administered to a sample of 151 subjects undergoing group therapy. The psychometric properties of the instrument were evaluated by means of the Rasch model, and showed a good score range, good reproducibility and adequate coherence. The hierarchy of difficulty of the items remained stable among the respective categories of sex, age and professional level.
|Translated title of the contribution||A Group Therapy Assessment Tool (GRETHA -Q)|
|Number of pages||10|
|Journal||Giornale Italiano di Medicina del Lavoro ed Ergonomia|
|Issue number||1 SUPPL. 1|
|Publication status||Published - Jan 2006|
ASJC Scopus subject areas
- Public Health, Environmental and Occupational Health