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|Title:||Psychometric limitations of the center for epidemiologic studies-depression scale for assessing depressive symptoms among adults with HIV/AIDS : a Rasch analysis|
|Authors :||Gay, Caryl L.|
Kottorp, Anders Börje Mauritz
Lee, Kathryn A.
|Published in :||Depression Research and Treatment|
|Publisher / Ed. Institution :||Hindawi|
|License (according to publishing contract) :||CC BY 4.0: Namensnennung 4.0 International|
|Type of review:||Not specified|
|Subject (DDC) :||616.8: Neurology, diseases of nervous system|
|Abstract:||The Center for Epidemiological Studies-Depression (CES-D) scale is a widely used measure of depressive symptoms, but its psychometric properties have not been adequately evaluated among adults with HIV/AIDS. This study used an item response theory approach (Rasch analysis) to evaluate the CES-D's validity and reliability in relation to key demographic and clinical variables in adults with HIV/AIDS. A convenience sample of 347 adults with HIV/AIDS (231 males, 93 females, and 23 transgenders; age range 22-77 years) completed the CES-D. A Rasch model application was used to analyze the CES-D's rating scale functioning, internal scale validity, person-response validity, person-separation validity, internal consistency, differential item functioning (DIF), and differential test functioning. CES-D scores were generally high and associated with several demographic and clinical variables. The CES-D distinguished 3 distinct levels of depression and had acceptable internal consistency but lacked unidimensionality, five items demonstrated poor fit to the model, 15% of the respondents demonstrated poor fit, and eight items demonstrated DIF related to gender, race, or AIDS diagnosis. Removal of misfitting items resulted in minimal improvement in the CES-D's substantive and structural validity. CES-D scores should be interpreted with caution in adults with HIV/AIDS, particularly when comparing scores across gender and racial groups.|
|Publication type:||Article in scientific Journal|
|Appears in Collections:||Publikationen Gesundheit|
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