title: Semi-structured Interview Measure of Stigma (SIMS) in psychosis: Assessment of psychometric properties.
abstract: Stigma is a significant difficulty for people who experience psychosis. To date, there have been no outcome measures developed to examine stigma exclusively in people with psychosis. The aim of this study was develop and validate a semi-structured interview measure of stigma (SIMS) in psychosis. The SIMS is an eleven item measure of stigma developed in consultation with service users who have experienced psychosis. 79 participants with experience of psychosis were recruited for the purposes of this study. They were administered the SIMS alongside a battery of other relevant outcome measures to examine reliability and validity. A one-factor solution was identified for the SIMS which encompassed all ten rateable items. The measure met all reliability and validity criteria and illustrated good internal consistency, inter-rater reliability, test retest reliability, criterion validity, construct validity, sensitivity to change and had no floor or ceiling effects. The SIMS is a reliable and valid measure of stigma in psychosis. It may be more engaging and acceptable than other stigma measures due to its semi-structured interview format.
authors.affiliation: North East London Foundation Trust, Goodmayes Hospital, Barley Lane, Ilford IG3 8XJ, United Kingdom; University of Manchester, School of Psychological Sciences, Zochonis Building, Manchester M13 9PL, United Kingdom. Electronic address: lisawood3@nhs.net.
authors.forename: Lisa
authors.initials: L
authors.lastname: Wood
authors.affiliation: University of Manchester, School of Psychological Sciences, Zochonis Building, Manchester M13 9PL, United Kingdom.
authors.forename: Eilish
authors.initials: E
authors.lastname: Burke
authors.affiliation: Psychosis Research Unit, Greater Manchester West NHS Foundation Trust, Rico House, Prestwich, Manchester M25 9WL, United Kingdom.
authors.forename: Rory
authors.initials: R
authors.lastname: Byrne
authors.affiliation: North East London Foundation Trust, Goodmayes Hospital, Barley Lane, Ilford IG3 8XJ, United Kingdom.
authors.forename: Gabriela
authors.initials: G
authors.lastname: Enache
authors.affiliation: University of Manchester, School of Psychological Sciences, Zochonis Building, Manchester M13 9PL, United Kingdom; Psychosis Research Unit, Greater Manchester West NHS Foundation Trust, Rico House, Prestwich, Manchester M25 9WL, United Kingdom.
authors.forename: Anthony P
authors.initials: AP
authors.lastname: Morrison
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D007406:Interview, Psychological; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D010865:Pilot Projects; D025341:Principal Component Analysis; D011594:Psychometrics; D011618:Psychotic Disorders / Q000175:diagnosis* / Q000523:psychology*; D015203:Reproducibility of Results; D057545:Social Stigma; D055815:Young Adult
keywords: Psychometrics; Psychosis; Schizophrenia; Semi-structured interview; Stigma