Evidence map›Paper›PMID 33141944›Full record

ArticleActa psychiatrica Scandinavica2021

Combining machine learning algorithms for prediction of antidepressant treatment response.

Alexander Kautzky, Hans-Juergen Möller, Markus Dold, Lucie Bartova, Florian Seemüller, Gerd Laux, Michael Riedel, Wolfgang Gaebel, Siegfried Kasper

Open access · hybridAbstract readMulticenter Study
In one paragraph

Article in Acta psychiatrica Scandinavica, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 4 pooled it
4.5field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed, 4 syntheses or guidelines pooled it, 49 citations in OpenAlex.

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  12. Symptom networks in major depressive disorder and treatment response: special focus on TRD.European psychiatry : the journal of the Association of European Psychiatrists · 2025
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  18. Machine learning prediction model for treatment responders in patients with primary biliary cholangitis.JGH open : an open access journal of gastroenterology and hepatology · 2023
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 6 institutions in 2 countries.

Alexander KautzkyDepartment of Psychiatry and Psychotherapy, Medical University of Vienna, Vienna, Austria.ORCID 0000-0001-9251-8285
Hans-Juergen MöllerDepartment of Psychiatry and Psychotherapy, Ludwig-Maximilians-Q3 University Munich, Munich, Germany.
Markus DoldDepartment of Psychiatry and Psychotherapy, Medical University of Vienna, Vienna, Austria.ORCID 0000-0001-8914-2192
Lucie BartovaDepartment of Psychiatry and Psychotherapy, Medical University of Vienna, Vienna, Austria.
Florian SeemüllerDepartment of Psychiatry and Psychotherapy, Ludwig-Maximilians-Q3 University Munich, Munich, Germany.
Gerd LauxDepartment of Psychiatry and Psychotherapy, kbo-Inn-Salzach-Klinikum, Wasserburg, Germany.
Michael RiedelDepartment of Psychiatry and Psychotherapy, Ludwig-Maximilians-Q3 University Munich, Munich, Germany.
Wolfgang GaebelDepartment of Psychiatry and Psychotherapy, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany.
Siegfried KasperDepartment of Psychiatry and Psychotherapy, Medical University of Vienna, Vienna, Austria.ORCID 0000-0001-8278-191X
Medical University of Vienna · ATGarmisch-Partenkirchen Medical Center · DEHeinrich Heine University Düsseldorf · DEInn-Salzach-Klinikum · DELudwig-Maximilians-Universität München · DESächsisches Krankenhaus Rodewisch · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesPredictors for unfavorable treatment outcome in major depressive disorder (MDD) applicable for treatment selection are still lacking. The database of a longitudinal multicenter study on 1079 acutely depressed patients, performed by the German research network on depression (GRND), allows supervised and unsupervised learning to further elucidate the interplay of clinical and psycho-sociodemographic variables and their predictive impact on treatment outcome phenotypes. EXPERIMENTAL PROCEDURES: Treatment response was defined by a change of HAM-D 17-item baseline score ≥50% and remission by the established threshold of ≤7, respectively, after up to eight weeks of inpatient treatment. After hierarchical symptom clustering and stratification by treatment subtypes (serotonin reuptake inhibitors, tricyclic antidepressants, antipsychotic, and lithium augmentation), prediction models for different outcome phenotypes were computed with random forest in a cross-center validation design. In total, 88 predictors were implemented.

resultsClustering revealed four distinct HAM-D subscores related to emotional, anxious, sleep, and appetite symptoms, respectively. After feature selection, classification models reached moderate to high accuracies up to 0.85. Highest accuracies were observed for the SSRI and TCA subgroups and for sleep and appetite symptoms, while anxious symptoms showed poor predictability.

conclusionOur results support a decisive role for machine learning in the management of antidepressant treatment. Treatment- and symptom-specific algorithms may increase accuracies by reducing heterogeneity. Especially, predictors related to duration of illness, baseline depression severity, anxiety and somatic symptoms, and personality traits moderate treatment success. However, prospectives application of machine learning models will be necessary to prove their value for the clinic.

Indexed as

Major Depressive DisorderAlgorithmsAntidepressive AgentsHumansMachine LearningSelective Serotonin Reuptake InhibitorsTreatment OutcomeAntidepressive AgentsSelective Serotonin Reuptake Inhibitorsaffective disordersantidepressivesclassification

Identifiers

PMID33141944
PMCPMC7839691
OpenAlexW3095203868

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.