title: Psychometric properties of Psychopathology checklists for Adults with Intellectual Disability (P-AID) on a community sample of adults with intellectual disability.
abstract: The DC-LD is a new classification system providing operationalized diagnostic criteria in recognition of lacking applicability of standard psychiatric criteria for adults with intellectual disability. This study attempts to evaluate internal consistency, inter-rater reliability and factor structure of the Psychopathology Checklists for Adults with Intellectual Disability (P-AID), a set of checklists developed from the DC-LD. The P-AID checklists comprising 10 psychiatric diagnoses and 8 types of problem behaviors were filled in by staff at community based homes for adults with intellectual disability in Western Norway. A total of 593 were returned (66%) of which 83 had two sets of checklists. Intellectual disability was administratively defined. Alpha (alpha) values for the total P-AID checklists indicating high internal consistency. The inter-rater reliability measured by ICC showed values between 0.63 and 0.88 in 8 of 10 psychopathology Checklists. Factor analysis indicated four orthogonal units measured by the P-AID. Issues regarding sensitivity and specificity are discussed. This study is the first attempt to develop and evaluate Psychopathology Checklists based on the DC-LD. The results from this study indicate the P-AID can be used in identifying mental health needs at a detailed diagnostic level.
authors.affiliation: Division of Psychiatry, Helse Fonna HF, University of Bergen, Norway.
authors.forename: Oddbjørn
authors.initials: O
authors.lastname: Hove
authors.forename: Odd E
authors.initials: OE
authors.lastname: Havik
mesh_terms: D000203:Activities of Daily Living / Q000145:classification / Q000523:psychology; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001008:Anxiety Disorders / Q000175:diagnosis / Q000523:psychology; D001714:Bipolar Disorder / Q000175:diagnosis / Q000523:psychology; D015897:Comorbidity; D003704:Dementia / Q000175:diagnosis / Q000523:psychology; D003866:Depressive Disorder / Q000175:diagnosis / Q000523:psychology; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000145:classification / Q000175:diagnosis* / Q000523:psychology; D007360:Intelligence; D008297:Male; D008403:Mass Screening; D001523:Mental Disorders / Q000175:diagnosis* / Q000523:psychology; D008875:Middle Aged; D009664:Norway; D009771:Obsessive-Compulsive Disorder / Q000175:diagnosis / Q000523:psychology; D011569:Psychiatric Status Rating Scales / Q000706:statistics & numerical data*; D011594:Psychometrics / Q000706:statistics & numerical data; D011599:Psychopathology; D011618:Psychotic Disorders / Q000175:diagnosis / Q000523:psychology; D015203:Reproducibility of Results; D012920:Social Behavior Disorders / Q000175:diagnosis / Q000523:psychology