Validity and severity thresholds for the depression subscale of the affective self rating scale: An equipercentile equating study using classical test theory
| Autor: | Stephen M. Strakowski, DJ Newport, KS Chiang, Mark Bond, Charles B. Nemeroff, SJ Collier, Jrc Almeida, T Lanza di Scalea, J Farrington, SJ Sharp, DA Spelber |
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| Rok vydání: | 2022 |
| Předmět: |
Psychiatric Status Rating Scales
education.field_of_study Psychometrics genetic structures Depression Population Retrospective cohort study medicine.disease behavioral disciplines and activities Classical test theory Patient Health Questionnaire Psychiatry and Mental health Clinical Psychology Mood disorders mental disorders Item response theory Equating medicine Humans Self Report Psychology education Depression (differential diagnoses) Retrospective Studies Clinical psychology |
| Zdroj: | Journal of Affective Disorders. 296:541-548 |
| ISSN: | 0165-0327 |
| Popis: | The Affective Symptoms Scale (ASRS) is a unique instrument designed to separately measure depressive and manic symptoms in mood disorders. We validated the ASRS against the Patient Health Questionnaire (PHQ-9) and the Quick Inventory of Depressive Symptomatology (QIDS-16).A retrospective study of 258 patients who completed the PHQ-9, QIDS-16 and ASRS as part of routine clinical care. To establish meaningful clinical thresholds for the depression subscale of the ASRS, it was equated with the QIDS and the PHQ-9.The depression subscale of the ASRS had significant positive correlations with the QIDS-16 and the PHQ-9 (respectively, r= 0.8, t[253] = 19.8, p 0.001, and r= 0.8, t[245] = 28.2, p 0.001). The equipercentile equating method with the PHQ-9 indicated that the thresholds corresponded to ASRS depression subscale scores of 5.4, 10.6, 16.1, and 23. Equating with the QIDS indicated that thresholds corresponded to ASRS depression subscale scores of 5.1, 11, 18.4, and 27.5.Limitations include a small sample size that did not allow more detailed statistical analysis, such as Item Response Theory. The population is a heterogenous population at a university outpatient setting.The ASRS depression subscale significantly correlated with the PHQ-9 and QIDS-16. Our proposed threshold scores for the ASRS are 5, 11, 16 and 23 to indicated mild, moderate, severe and very severe depression respectively. |
| Databáze: | OpenAIRE |
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