Psychiatric morbidity in older people with moderate and severe learning disability. I: Development and reliability of the patient interview (PAS-ADD).
This paper describes the development of the PAS-ADD, a semistructured clinical interview for use specifically with patients with learning disabilities, based on items drawn from the PSE. The PAS-ADD includes a number of novel features including: parallel interviewing of patient and informant; a three-tier structure to provide a flexible interview appropriate to the patient's intellectual level; use of a memorable 'anchor event' in the patient's life to improve time focus; and simplified wording, improved organisation and lay out. Inter-rater reliability was investigated using an experimental design in which two raters viewed and re-rated videotaped PAS-ADD interviews which had been conducted by an experienced clinician. Reliability results compared favourably with those obtained in a major study of PSE reliability with a sample drawn from non-learning disabled individuals. Mean kappa for all items was 0.72. Other indexes of reliability were also good. In the current phase of development, the PAS-ADD is to be expanded to include further diagnostic categories, including schizophrenia and autism. The new version will be updated for use with ICD-10 criteria.
Moss
S
S
Hester Adrian Research Centre, University of Manchester.
Patel
P
P
Prosser
H
H
Goldberg
D
D
Simpson
N
N
Rowe
S
S
Lucchino
R
R
D000368:Aged; D000465:Algorithms; D015897:Comorbidity; D003627:Data Interpretation, Statistical; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000150:complications* / Q000453:epidemiology / Q000523:psychology; D007859:Learning Disabilities / Q000150:complications / Q000453:epidemiology / Q000523:psychology; D008297:Male; D001523:Mental Disorders / Q000175:diagnosis* / Q000453:epidemiology; D008875:Middle Aged; D011569:Psychiatric Status Rating Scales / Q000592:standards* / Q000706:statistics & numerical data; D015203:Reproducibility of Results; D012720:Severity of Illness Index