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Reliability and validity of the Dutch Anxiety, Depression And Mood Scale in adults aged <50 years with intellectual disabilities
Author(s) -
Hamers Pauline C. M.,
Ool Jans S.,
Festen Dederieke A. M.,
Hendriksen Jos G. M.,
Bindels Patrick J. E.,
Hermans Heidi
Publication year - 2019
Publication title -
journal of applied research in intellectual disabilities
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.056
H-Index - 63
eISSN - 1468-3148
pISSN - 1360-2322
DOI - 10.1111/jar.12550
Subject(s) - psychology , anxiety , mood , internal consistency , clinical psychology , reliability (semiconductor) , intellectual disability , psychiatry , depression (economics) , epilepsy , psychometrics , power (physics) , physics , quantum mechanics , economics , macroeconomics
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).