Measurement-based care (i.e., the systematic use of rating scales to guide clinical decision-making) has shown great promise in the treatment of major depression in clinical trials. Unfortunately, measurement-based care has not yet gained ground in clinical practice, possibly because clinician-rated scales are time-consuming and limited by the availability of trained raters. Hence, brief and valid self-rated scales (questionnaires) may serve as an alternative or supplement to clinician-rated scales. The self-rated 6-item Hamilton Depression Rating Scale (HAM-D6-SR) has shown some promise in this regard, but its validity among inpatients remains unclear.

The objective of this study is to evaluate the criterion validity and responsiveness (sensitivity to change) of the HAM-D6-SR among inpatients using the clinician-rated 17-item Hamilton Rating Scale for Depression (HAM-D17) as gold standard reference.

Inpatients with depression will complete the HAM-D6-SR twice during admission (at least one week between the two self-ratings). At both occasions, the patients will subsequently be rated on the HAM-D17 by trained raters, who are blind to the HAM-D6-SR ratings. The agreement between the HAM-D6-SR and the HAM-D6 extracted from the HAM-D17 will be evaluated using intra-class correlation.

A total of 100 inpatients will be recruited for the study. Data collection is ongoing, and the results of the study will be presented at the 2022 EPA meeting.

If the agreement between the HAM-D6-SR and the HAM-D6 extracted from the HAM-D17 is satisfactory, the HAM-D6-SR could inform decision-making in the treatment of depression.

The presenting author, PK, declares no conflict of interests. Co-author, SDØ, has received the 2020 Lundbeck Foundation Young Investigator Prize. Furthermore, SDØ owns units of mutual funds with stock tickers DKIGI, DKIDKIX, MAJGRO, NBIDE, SPVILRKL and WE