Psychometric properties of the Parma Scale for the treatment evaluation of prisoners with mental disorder: a new instrument for routine outcome monitoring in different forensic psychiatric settings

Introduction The clinical relevance of Routine Outcome Monitoring (ROM) to formulate longitudinal evaluations treatment appropriateness/efficacy and assist decision making aimed at improving the quality person-centered interventions has been poorly implemented in forensic psychiatry, also Italy. Indeed, very few assessment instruments have developed this crucial field. Objectives As reliable ROM are lacking, aim current investigation was examine psychometric properties (i.e. reliability, concurrent validity sensitivity measure scores’ changes) Parma Scale (Pr-Scale) (a new instrument fro evaluation offenders with mental disorder) an Italian sample psychiatric patients. Methods Participants were male adult disorder recruited within REMS (“Residence for Execution Security Measure”) or Penitentiary Institute (PPI). Exclusion criteria known moderate/severe intellectual disability any other medical condition inducing inability express a valid consent participating research. Pr-Scale includes 20 items divided into 3 main domains: “Historical”, “Clinical” (observational) “Treatment Plannining". To test Pr-Scale, we examined interrater short-term (1-week) test-retest reliability internal consistency. validity, correlation analysis item scores corresponding HKT-R (the “Historisch, Klinische en Toekomstige – Revisie” instrument) subscores performed. Finally, changes over 3-month follow-up period. Results 60 patients study. Our findings showed good excellent consistency Pr-Scale. display moderate large changeability time (Intra-Class Correlation coefficient = 0.963, stability 0.997, Cronbach’s ɑ 0.736). Statistically significant correlations found. Across period, observed statistically values measuring total score domain subscores. Conclusions results support use different settings prison, REMS) as instrument. Disclosure Interest None Declared