Abstract
Objective. This study aimed to ascertain the cut-off scores of the Depression and Somatic Symptoms Scale (DSSS) for non-full remission (FR) and a current major depressive episode (MDE) and compare the discriminative abilities of the DSSS and the Hospital Anxiety and Depression Scale (HADS). Methods. One-hundred and nineteen depressive outpatients who completed a 6-month follow-up were used to ascertain the cut-off scores for non-FR, defined as a Hamilton Depression Rating Scale score ≥ 8; another 214 consecutive outpatients were assessed to identify the cut-off scores for a MDE, as defined by the Structured Clinical Interview for DSM-IV-TR. Receiver operating characteristic (ROC) analysis was used to ascertain the cut-off scores. Results. The area under the ROC curve was greatest for the DSSS depression subscale (DS), followed by the HADS depression subscale (HADS-D). The cut-off scores for non-FR were a DS score ≥ 9 (sensitivity and specificity: 88.7 and 71.9%, respectively) and a HADS-D score ≥ 8 (77.4 and 84.2%), and the cut-off scores for a MDE were a DS score ≥ 19 (86.3 and 75.6%) and a HADS-D score ≥ 11 (77.9 and 76.5%). Conclusions. The DSSS and HADS can be used to distinguish different depressive states. The results demonstrated the discriminative validity of the DSSS and the HADS.
Acknowledgements
This study was supported by grants from the National Science Council of Taiwan (NSC 94-2314-B-182A-207 and NSC 95-2314-B-182A-188-MY2).
Statement of Interest
All authors declare that they have no conflicts of interest.