Frontiers in Psychiatry (Oct 2023)

Factor structure of the brief psychiatric rating scale-expanded among outpatients with psychotic disorders in five Southeast European countries: evidence for five factors

  • Stojan Bajraktarov,
  • Biljana Blazhevska Stoilkovska,
  • Manuela Russo,
  • Selman Repišti,
  • Nadja P. Maric,
  • Alma Dzubur Kulenovic,
  • Aliriza Arënliu,
  • Lidija Injac Stevovic,
  • Ljubisha Novotni,
  • Emina Ribic,
  • Jon Konjufca,
  • Ivan Ristic,
  • Antoni Novotni,
  • Nikolina Jovanovic

DOI
https://doi.org/10.3389/fpsyt.2023.1207577
Journal volume & issue
Vol. 14

Abstract

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The Brief Psychiatric Rating Scale (BPRS) is a useful tool for measuring the severity of psychopathological symptoms among patients with psychosis. Many studies, predominantly in Western countries, have investigated its factor structure. This study has the following aims: (a) to further explore the factor structure of the BPRS-Expanded version (BPRS-E, 24 items) among outpatients with psychotic disorders in Southeast European countries; (b) to confirm the identified model; and (c) to investigate the goodness-of-fit of the three competing BPRS-E factor models derived from previous studies. The exploratory factor analysis (EFA) produced a solution with 21 items grouped into five factors, thus supporting the existence of a fifth factor, i.e., Disorganization. A follow-up confirmatory factor analysis (CFA) revealed a 19-item model (with two items removed) that fit the data well. In addition, the stability of two out of three competing factor models was confirmed. Finally, the BPRS-E model with 5 factors developed in this cross-national study was found to include a greater number of items compared to competing models.

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