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J Appl Res Intellect Disabil. 2018 Nov 20. doi: 10.1111/jar.12550. [Epub ahead of print]

Reliability and validity of the Dutch Anxiety, Depression And Mood Scale in adults aged <50 years with intellectual disabilities.

Author information

1
Department of General Practice, Intellectual Disability Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands.
2
Amarant Group, Healthcare Organization for People with Intellectual Disabilities, Tilburg, The Netherlands.
3
Department of Residential Care, Kempenhaeghe Epilepsy Center, Heeze, The Netherlands.
4
Department of Behavioral Sciences, Kempenhaeghe Epilepsy Center, Heeze, The Netherlands.
5
Department of Neurology, Maastricht University Medical Center, Maastricht, The Netherlands.
6
Department of Neurological Learning Disabilities, Kempenhaeghe Epilepsy Center, Heeze, The Netherlands.
7
Department of General Practice, Erasmus University Medical Center, Rotterdam, The Netherlands.

Abstract

BACKGROUND:

Reliable and valid screening instruments for depression and anxiety are needed for adults with intellectual disabilities.

METHODS:

Internal consistency (n = 198), inter-rater reliability (n = 41), test-retest reliability (n = 37) and criterion validity (n = 43) were studied in adults aged between 18 and 49 years. Internal consistency was also studied in a sample with epilepsy (n = 98).

RESULTS:

Internal consistencies of the Dutch ADAMS total scale and subscales were satisfactory to good (α = 0.76-0.92), as well as in the subgroup with epilepsy (α = 0.74-0.88). Inter-rater reliability and test-retest reliability were fair to excellent for the total scale (ICC's: 0.57-0.84) and subscales (ICC's: 0.43-0.86). The criterion validity of the Dutch ADAMS Depressive Mood subscale was good with a sensitivity of 88% (95% CI: 53%-98%) and a specificity of 80% (95% CI: 64%-90%).

CONCLUSIONS:

Our study shows that the Dutch ADAMS is a reliable and valid instrument for adults aged between 18 and 49 years with intellectual disabilities (and comorbid epilepsy).

KEYWORDS:

anxiety; depression; intellectual disabilities; reliability; validity

PMID:
30460756
DOI:
10.1111/jar.12550

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