title: Application of the Spielberger's State-Trait Anger Expression Inventory in clinical patients.
abstract: OBJECTIVE
  To examine the factor structure of the Portuguese version of State-Trait Anger Expression Inventory (STAXI) in clinical patients.
  
  
  METHODS
  400 subjects from an internal medicine outpatient unit and 200 from a medical ward were recruited. Patients answered questions about clinical data, the STAXI, and the Beck Depression Inventory (BDI). Raw score of the STAXI was submitted to reliability assessment and factor analysis.
  
  
  RESULTS
  Internal consistency using the Cronbach's alpha coefficient was of 0.84. The STAXI significantly correlated with BDI at r=0.352 (p<0.01). The final solution of Principal Component Analysis identified five meaningful factors: Trait-Anger, State-Anger, Anger-Control, Anger-Out, and Anger-In. This structural model is close to the original theoretical construct of Spielberger's STAXI.
  
  
  CONCLUSIONS
  The Portuguese version of STAXI presented an adequate factorial structure that permits the evaluation of anger dimensions among clinical patients.
authors.affiliation: School of Medicine, University of São Paulo, São Paulo, SP, Brazil.
authors.forename: Flávia Barros de
authors.initials: FB
authors.lastname: Azevedo
authors.forename: Yuan-Pang
authors.initials: YP
authors.lastname: Wang
authors.forename: Alessandra Carvalho
authors.initials: AC
authors.lastname: Goulart
authors.forename: Paulo Andrade
authors.initials: PA
authors.lastname: Lotufo
authors.forename: Isabela Martins
authors.initials: IM
authors.lastname: Benseñor
mesh_terms: D000786:Anger; D001938:Brazil; D003430:Cross-Sectional Studies; D003466:Cultural Characteristics; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D025341:Principal Component Analysis; D011594:Psychometrics; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D014175:Translating