Validation and adaptation of the Norwegian version of Hayes Ability Screening Index for intellectual difficulties in a psychiatric sample.
BACKGROUND
Intellectual disabilities (ID) among psychiatric patients have traditionally been neglected. A lack of convenient instruments and competency in ID may have worsened the conditions and treatment availability for these patients.


OBJECTIVE
Validation and adaptation of a screening instrument for ID (Hayes Ability Screening Index; HASI) in a psychiatric hospital setting.


METHODS
This is a cross-sectional study of 50 psychiatric patients in two Norwegian psychiatric hospitals comparing results of the HASI with the Wechsler Abbreviated Scale of Intelligence (WASI).


RESULTS
The HASI correlated well with the standard IQ test used (r= 0.67, P< 0.001). At a stated cut-off score of 85, the HASI had a sensitivity of 100% and specificity of 34%.


CONCLUSIONS
The HASI is a valid and time-saving screening instrument for ID among psychiatric patients. The prescribed cut-off score, however, resulted in a large number of false positives.
Søndenaa
Erik
E
Forensic Department Brøset, Center for Research and Education in Forensic Psychiatry, P.O. 1803 Lade, 7440 Trondheim, Norway. erik.sondenaa@ntnu.no
Nygård
Øyvind
Ø
Nøttestad
Jim Aage
JA
Linaker
Olav Martin
OM
D000328:Adult; D017046:Cost Savings; D019091:Critical Pathways / Q000191:economics; D005260:Female; D006778:Hospitals, Psychiatric; D006801:Humans; D007361:Intelligence Tests / Q000592:standards*; D007859:Learning Disabilities / Q000175:diagnosis* / Q000209:etiology; D008297:Male; D008403:Mass Screening / Q000191:economics / Q000379:methods* / Q000592:standards; D016743:Mental Competency / Q000523:psychology*; D001523:Mental Disorders / Q000150:complications / Q000453:epidemiology; D028642:Persons with Psychiatric Disorders / Q000523:psychology; D008875:Middle Aged; D009664:Norway; D015995:Prevalence; D012680:Sensitivity and Specificity