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Assessing anxious features in depressed outpatients.
- Source :
-
International Journal of Methods in Psychiatric Research . 2011, Vol. 20 Issue 4, pe69-e82. 14p. - Publication Year :
- 2011
-
Abstract
- Both the 17-item Hamilton Rating Scale for Depression (HRSD17) and 30-item Inventory of Depressive Symptomatology - Clinician-rated (IDS-C30) contain a subscale that assesses anxious symptoms. We used classical test theory and item response theory methods to assess and compare the psychometric properties of the two anxiety subscales (HRSDANX and IDS-CANX) in a large sample ( N = 3453) of outpatients with non-psychotic major depressive disorder in the Sequenced Treatment Alternatives to Relieve Depression (STAR*D) study. Approximately 48% of evaluable participants had at least one concurrent anxiety disorder by the self-report Psychiatric Diagnostic Screening Questionnaire (PDSQ). The HRSDANX and IDS-CANX were highly correlated ( r = 0.75) and both had moderate internal consistency given their limited number of items (HRSDANX Cronbach's alpha = 0.48; IDS-CANX Cronbach's alpha = 0.58). The optimal threshold for ascribing the presence/absence of anxious features was found at a total score of eight or nine for the HRSDANX and seven or eight for the IDS-CANX. It would seem beneficial to delete item 17 (loss of insight) from the HRSDANX as it negatively correlated with the scale's total score. Both the HRSDANX and IDS-CANX subscales have acceptable psychometric properties and can be used to identify anxious features for clinical or research purposes. Copyright © 2011 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ANXIETY
*DEPRESSED persons
*SYMPTOMS
*WORRY
*CRONBACH'S alpha
*RESEARCH
Subjects
Details
- Language :
- English
- ISSN :
- 10498931
- Volume :
- 20
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- International Journal of Methods in Psychiatric Research
- Publication Type :
- Academic Journal
- Accession number :
- 67459549
- Full Text :
- https://doi.org/10.1002/mpr.353