Understanding the severity of depression: Which symptoms of depression are the best indicators of depression severity?

摘要

Background: In DSM-5, all symptoms of depression are considered equal representations of severity. In ICD-10, the type of symptom is considered in classifying severity. It is important to better understand if the defining symptoms of depression are differentially associated with overall severity so that severity categorization in diagnostic systems is most valid. In the present study from the Rhode Island Methods to Improve Diagnostic Assessment and Services (MIDAS) project we examined the association between the individual diagnostic criteria for major depressive disorder (MDD) and global ratings of depression severity. We thus examined whether there is support for the ICD-10 approach in which some symptoms are better indicators of severity than are other symptoms.