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Psychometric evaluation of a Swedish version of the Reiss Screen for Maladaptive Behavior
1Uppsala University, Department of Neuroscience, Psychiatry Ulleråker, Uppsala, Sweden. carina.gustafsson@neuro.uu.se
Background:
People with intellectual disability (ID) are afflicted by mental health problems to a greater extent than other individuals, and the coexistence of ID and mental health problems involves diagnostic as well as treatment difficulties.
Methods:
A Swedish version of the Reiss Screen for Maladaptive Behavior (RSMB), an instrument used for identification of mental health problems in people with intellectual disability (ID) was evaluated in terms of inter-rater agreement, internal consistency, item grouping and criterion validity based on a random sample and a clinical group of adults with ID.
Results:
The Swedish version of the RSMB had moderate-to-low inter-rater agreement on specific items and good internal consistency. The total score was considered to be a fairly reliable measure of a positive or negative result on the RSMB. A principal component analysis yielded seven interpretable components. A close resemblance in sets of items between the Swedish version and the original version of RSMB was found for three subscales: Aggressive Behaviour, Avoidance Disorder and Depression (Behavioural Signs). The outcome of the criterion validity analysis indicated a higher rate of false negatives than false positives.
Conclusions:
The potential influence of concurrent psychopharmacological treatment is discussed. It is concluded that the Swedish version of the RSMB can be used as intended by staff as a primary screening device for the identification of mental health problems among people with ID in a Swedish setting.