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Moderate and severe depression. Gradations for the Montgomery-Asberg Depression Rating Scale
M J Müller1, A Szegedi, H Wetzel
1Department of Psychiatry, University of Mainz, Untere Zahlbacher Strasse 8, D-55131, Mainz, Germany. mjm@mail.psychiatrie.klinik.uni-mainz.de
Insights
A new study suggests a Montgomery-Asberg Depression Rating Scale (MADRS) score of 35 can distinguish moderate from severe depression. This finding aligns with a Hamilton Depression Rating Scale (HAMD-17) score of 28, aiding clinical assessment.
Area of Science:
- Psychiatry
- Clinical Psychology
- Neuroscience
Background:
- The Montgomery-Asberg Depression Rating Scale (MADRS) is crucial for assessing depression severity.
- A clear distinction between moderate and severe depression using MADRS, validated against the Hamilton Depression Rating Scale (HAMD-17), is currently lacking.
Purpose of the Study:
- To establish a reliable MADRS cut-off score for differentiating moderate from severe depression.
- To compare MADRS scores with HAMD-17 scores in a cohort of major depressive disorder patients.
Main Methods:
- Analysis of MADRS and HAMD-17 ratings from 40 inpatients diagnosed with major depressive disorder (DSM-III-R).
- Computation of linear and non-parametric correlations between MADRS and HAMD-17 scores.
- Estimation of a MADRS cut-off score using an HAMD-17 score of at least 28 as a reference for severe depression.
Main Results:
- The mean HAMD-17 score was 24.6 (±4.3) and the mean MADRS score was 32.6 (±5.0).
- A strong linear correlation (r=0.70, P<0.0005) was observed between HAMD-17 and MADRS scores.
- A MADRS cut-off score of 35 was identified to effectively distinguish moderate from severe depression, corresponding to an HAMD-17 threshold of 28.
Conclusions:
- The study suggests a MADRS score of 35 can serve as a reliable indicator for severe depression, referencing an HAMD-17 score of 28.
- Preliminary findings support the use of this cut-off, though limitations include a small sample size and lack of direct observer severity ratings.
- Further research is recommended to validate these findings in larger, diverse populations.
Background:
Despite its importance, no distinction between moderate and severe depression using the Montgomery-Asberg Depression Rating Scale (MADRS) based on a direct comparison with the Hamilton Depression Rating Scale (HAMD-17) is available.
Methods:
HAMD-17 and MADRS ratings from N=40 at least moderately depressed inpatients with major depression (DSM-III-R) were analyzed. Linear and non-parametric correlations were computed and a MADRS cut-off score for severe depression using an HAMD-17 score of at least 28 points as reference was estimated.
Results:
HAMD-17 and MADRS mean scores were 24.6+/-4.3 and 32.6+/-5.0 points, respectively. Linear correlation of both scores was r=0.70 (P<0.0005). A MADRS cut-off score of at least 35 points was estimated to separate 'moderate' from 'severe' depression corresponding to a HAMD-17 cut-off of 28 points with sufficient sensitivity and specificity.
Limitations:
The sample size was limited and no observer ratings directly assessing the severity of depression were used.
Conclusions:
The preliminary findings are in line with previous findings and suggest a cut-off score of 35 points to separate moderate from severe depression with the MADRS accepting an HAMD-17 score of >/=28 point as reference. Further studies on this issue are warranted.