title: Translating the Clinical Outcomes in Routine Evaluation Outcome Measure (CORE-OM) into Lithuanian.
abstract: BACKGROUND
  There are no standardized tools in Lithuanian feasible for ongoing routine use to measure the effectiveness of psychotherapeutic treatment. The CORE-OM is a widely used 34-item self-report measure for such purpose.
  
  
  OBJECTIVE
  To explore the reliability, validity and sensitivity of the Lithuanian translation of CORE-OM questionnaire.
  
  
  METHODS
  A validation study of the CORE-OM was conducted in the psychiatric clinic attached to Vilnius University. A Lithuanian translation of the English original CORE-OM was prepared by a team of translators. Then 39 psychotherapy outpatients and 187 students were asked to complete the Lithuanian version of the CORE-OM; 66 were tested twice to determine test-retest stability. Analysis included both internal and test-retest reliability, acceptability, influence of gender, principal component analysis and criteria for reliable and clinically significant change.
  
  
  RESULTS
  Internal and test-retest reliability were good (0.61-0.94), though somewhat lower for the risk domain (α: 0.57-0.79, Spearman's rho 0.25-0.60). Differences between scores of the clinical and non-clinical samples were large and significant (P < 0.001). Some of the Lithuanian criteria for clinically significant change were a bit lower than those of the original UK criteria (e.g. well-being) and others higher (symptoms, functioning, overall score), illustrating the need for local exploration.
  
  
  CONCLUSIONS
  In spite of small differences in psychometric properties from the original, the Lithuanian version of the CORE-OM was reliable and sensitive in both clinical and non-clinical settings. It has the potential to become a practical, sensitive and reliable tool for psychotherapists in Lithuania.
authors.affiliation: Clinic of Psychiatry, Faculty of Medicine, Vilnius University , Lithuania.
authors.forename: Rima
authors.initials: R
authors.lastname: Viliū nienė
authors.forename: Chris
authors.initials: C
authors.lastname: Evans
authors.forename: Jan
authors.initials: J
authors.lastname: Hilbig
authors.forename: Vilmantė
authors.initials: V
authors.lastname: Pakalniškienė
authors.forename: Vita
authors.initials: V
authors.lastname: Danilevičiūtė
authors.forename: Eugenijus
authors.initials: E
authors.lastname: Laurinaitis
authors.forename: Alvydas
authors.initials: A
authors.lastname: Navickas
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D008097:Lithuania; D008297:Male; D001523:Mental Disorders / Q000175:diagnosis* / Q000523:psychology* / Q000628:therapy; D008875:Middle Aged; D017063:Outcome Assessment, Health Care / Q000379:methods; D010045:Outpatients; D011594:Psychometrics; D011613:Psychotherapy; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D014175:Translating; D016896:Treatment Outcome; D055815:Young Adult