Mathias Harrer

Mathias Harrer
Technische Universität München | TUM · Psychology & Digital Mental Health Care

Master of Science

About

51
Publications
41,824
Reads
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1,293
Citations
Citations since 2016
51 Research Items
1285 Citations
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20162017201820192020202120220100200300400500
20162017201820192020202120220100200300400500

Publications

Publications (51)
Article
Full-text available
Because of the rapidly increasing number of randomised controlled trials (RCTs) and meta-analyses in many fields, there is an urgent need to step up from meta-analyses to higher levels of aggregation of outcomes of RCTs. Network meta-analyses and umbrella reviews allow higher levels of aggregation of RCT outcomes, but cannot adequately cover the ev...
Conference Paper
Digital health applications are becoming increasingly important for assessing and monitoring the wellbeing of people suffering from mental health conditions like depression. A common target of said applications is to predict the results of self-assessed Patient-Health-Questionnaires (PHQ), indicating current symptom severity of depressive individua...
Conference Paper
Previous studies have shown the correlation be-tween sensor data collected from mobile phones and human depression states. Compared to the traditional self-assessment questionnaires, the passive data collected from mobile phones is easier to access and less time-consuming. In particular, passive mobile phone data can be collected on a flexible time...
Preprint
Full-text available
Previous studies have shown the correlation between sensor data collected from mobile phones and human depression states. Compared to the traditional self-assessment questionnaires, the passive data collected from mobile phones is easier to access and less time-consuming. In particular, passive mobile phone data can be collected on a flexible time...
Preprint
Full-text available
Digital health applications are becoming increasingly important for assessing and monitoring the wellbeing of people suffering from mental health conditions like depression. A common target of said applications is to predict the results of self-assessed Patient-Health-Questionnaires (PHQ), indicating current symptom severity of depressive individua...
Article
Full-text available
Zusammenfassung Zielsetzung Trotz der Effektivität verschiedener E‑Mental-Health-Interventionen wurden bislang verhältnismäßig geringe Nutzungsraten, selbst unter Digital Natives wie Studierenden, identifiziert. Ziel dieser Studie ist daher, das Verhältnis der generellen Akzeptanz, dem konkreten Interesse und der tatsächlichen Registrierung für au...
Article
Full-text available
While randomized trials typically lack sufficient statistical power to identify predictors and moderators of outcome, “individual participant data” (IPD) meta-analyses, which combine primary data of multiple randomized trials, can increase the statistical power to identify predictors and moderators of outcome. We conducted a systematic review of IP...
Article
Full-text available
Objective: This experiment aims to investigate the influence of narrative information varying in the degree of perceived similarity and source credibility in supplemented testimonials on the acceptance of digital mental health services (digi-MHSs). Methods: In fall 2020, n =231 university students were randomly assigned to an active control group (...
Book
Full-text available
This book serves as an accessible introduction into how meta-analyses can be conducted in R. Essential steps for meta-analysis are covered, including pooling of outcome measures, forest plots, heterogeneity diagnostics, subgroup analyses, meta-regression, methods to control for publication bias, risk of bias assessments and plotting tools. Advance...
Article
Full-text available
Electronic mental health services (eMHSs) offer additional options for the dissemination of psychological interventions for university students. Still, many university students are reluctant to use eMHSs. Narrative messages may help increase the awareness and acceptance of quality-approved programs. However, little is known about the usefulness of...
Article
Background: Many depressed patients are treated in institutional settings. The number of studies focusing on psychotherapies for depressed patients in institutional settingsis limited, and only a few up-to-date meta-analyses have integrated the results of these studies. Methods: We conducted a meta-analysis of 32 randomized trials with 37 compariso...
Article
Full-text available
Depression is highly prevalent among university students. Internet-based interventions have been found to be effective in addressing depressive symptoms, but it is open if this also applies to interventions directed at academic stress. It is also largely unclear if the techniques employed in such programs provide significant additional benefits whe...
Article
Background After remission, antidepressants are often taken long term to prevent depressive relapse or recurrence. Whether psychological interventions can be a viable alternative or addition to antidepressants remains unclear. Aims To compare the effectiveness of psychological interventions as an alternative (including delivered when tapering anti...
Article
Full-text available
Introduction: Evidence on effects of Internet-based interventions to treat subthreshold depression (sD) and prevent the onset of major depression (MDD) is inconsistent. Objective: We conducted an individual participant data meta-analysis to determine differences between intervention and control groups (IG, CG) in depressive symptom severity (DSS...
Article
Full-text available
Background: Eating problems are highly prevalent among young adults. Universities could be an optimal setting to prevent the onset of eating disorders through psychological intervention. As part of the World Mental Health-International College Student initiative, this systematic review and meta-analysis synthesizes data on the efficacy of eating d...
Chapter
Mental disorders are highly prevalent and often remain untreated. Many limitations of conventional face-to-face psychological interventions could potentially be overcome through Internet-based and mobile-based interventions (IMIs). This chapter introduces core features of IMIs, describes areas of application, presents evidence on the efficacy of IM...
Poster
Full-text available
Internet-based and mobile interventions (IMIs) can help students to effectively cope with stress, but lacking awareness represents a barrier for adoption. While research suggests acceptance-facilitating effects of information, little is known about the additional value of testimonials in improving the uptake of IMIs for students. Objective: The aim...
Preprint
Full-text available
Background. Eating problems are highly prevalent among young adults. Universities could be an optimal setting to prevent eating disorders through psychological intervention. As part of the World Mental Health-International College Student initiative, this systematic review and meta-analysis synthesizes data on the efficacy of eating disorder preven...
Article
Full-text available
Background: Mental disorders are highly prevalent among university students. Distance- learning students are particularly burdened and have limited access to conventional university health services. Interventions for stress are sought after in distance learners and may help increase treatment coverage. Internet-based interventions have been shown t...
Poster
Stress related mental health problems are common among university students. Internet based and mobile interventions (IMIs) can help students to effectively cope with stress. However, lacking knowledge and negative attitudes may be barriers to use such interventions. While research suggests that information can be acceptance facilitating , little is...
Article
Full-text available
Background: Meditation, yoga, and mindfulness are popular interventions at universities and tertiary education institutes to improve mental health. However, the effects on depression, anxiety, and stress are unclear. This study assessed the effectiveness of meditation, yoga, and mindfulness on symptoms of depression, anxiety, and stress in tertiary...
Article
Full-text available
Background: Internet interventions have been proposed to improve the accessibility and use of evidence-based psychological treatments. However, little is known about attitudes toward such treatments, which can be an important barrier to their use. Objective: This study aimed to (1) determine attitudes toward guided internet interventions, (2) asse...
Article
Full-text available
Background: Mental health problems are highly prevalent among college students. Most students with poor mental health, however, do not receive professional help. Internet-based self-help formats may increase the utilization of treatment. Objective: The aim of this randomized controlled trial was to evaluate the efficacy of an internet-based, app-su...
Data
Interview guideline – individually tailored questions.
Data
Excerpt from the Internet - and Mobile based stress intervention for college students StudiCare.
Data
Flow of participants (CONSORT flow chart) [IG = intervention group, CG = control group, CONSORT = Consolidated Standards of Reporting Trials].
Article
Full-text available
Introduction Academic education is often associated with increased stress and adverse effects on mental health. Internet-based interventions have shown to be effective in reducing stress-related symptoms. However, college students as target group so far have not been reached appropriately with psychological interventions and little is known about c...
Poster
Full-text available
Die ökonomischen Konsequenzen von chronischen Rückenschmerzen sind beträchtlich und die Häufigkeit hat in den letzten Jahren zugenommen. Depressionen zählen zu den Krankheiten die am meisten Krankheitslast in Industrienationen verursachen. Versicherte mit chronischen Rückenschmerzen haben ein zwei- bis dreifach erhöhtes Risiko an einer Depression z...

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Projects

Projects (4)
Project
This pilot study on preferences regarding e-mental health information among future healthcare providers will be based on an exploratory sequential mixed methods design. The main purposes of this research design are the conceptual and methodological development for a pilot DCE on information preferences amongst university students in health-related study programs (especially medical students as potential users of e-mental health services and future prescribers of medical apps and users of telemedicine), that will serve as the foundation for a subsequent larger trial (proof-of-concept experiment). For this purpose, we will first apply formative qualitative methods (“subproject 1”, interviews, co-design workshops) to inform the experimental design of the DCE (“subproject 2”). The study is funded by the Forschungskommission (FoKo, young investigator funding program) of the Faculty of Medicine at the Heinrich Heine University Dusseldorf). Pre-registration of the qualitative study: https://osf.io/kemw8
Project
The E-Health interest group consists of clinical psychologists who, within the framework of their scientific and practical activities, deal with issues of digitisation in clinical psychology and psychotherapy. E-Health: Technology-based and IT-supported psychological interventions for health promotion, prevention and therapy of mental disorders and physical diseases The use of new media for diagnosis, health promotion and treatment of mental disorders and physical diseases represents an innovative way of further improving the quality of care in our health system. Research on Internet- and mobile-based interventions (IMIs), virtual realities and artificial-intelligent systems has been one of the most productive areas of research within psychotherapy research over the last decade. E-health approaches are being discussed as promising technology-based solutions for the expansion and optimization of health care services both at various stages of health promotion and treatment (education, prevention, diagnostics, treatment and relapse prevention) and in various counselling and treatment settings (outpatient, (partially) inpatient, BGM). IMIs refer to a heterogeneous field of measures ranging from therapeutically accompanied or unaccompanied self-help interventions, to interlinked online/offline offers ("blended therapy") and synchronous online-based intervention, e.g. via video conferencing. In addition to IMIs, the possibility of using virtual reality and artificial-intelligent systems will significantly change the (digitalised) healthcare of the future. There is now a very comprehensive evidence base on the effectiveness and cost-effectiveness of technology and IT-based intervention approaches in relation to a wide range of mental health problems and disorders, health behaviour and physical illnesses. Of particular importance here is not only the question of whether e-health offers are effective, but also why. In addition, the investigation of relevant subgroups with specific risk profiles and special treatment requirements is of great importance. An important milestone for the implementation of these digital interventions in our health care system will be to establish technical and organizational, as well as data protection, professional and social legal frameworks and quality criteria in order to ensure sufficient treatment safety. In the area of technology development, however, it is also necessary to address and critically question social and ethical aspects of the digitalization of our health care. The aim of the interest group is Networking and communication among members of the group with a research and/or practical focus on e-health. To systematize the broad and heterogeneous field of psychological e-health interventions for the prevention and treatment of mental disorders and physical illnesses and for the improvement of health behaviour. Dissemination of the group's comprehensive expertise in this field, e.g. within the framework of satellite symposia at congresses of neighbouring and complementary subjects, by issuing statements and participating in task forces, committees, etc. Supporting the translation of research results into care practice and in health care institutions as well as into education and training. Establishment as a central contact for stakeholders (ministries, service providers, service providers, professional associations, patient representatives, etc.) in the field of digitisation in the health care system; representation of the department's interests in cooperation with other departments and societies. Acquisition of new specialist group members through active dissemination of the comprehensive activities and the associated increased visibility of the specialist group and its activities. Creation of a platform for the necessary interdisciplinary exchange with complementary specialist areas (e.g. computer science, media design, medicine, law, business administration and economics, public health and health care research, etc.) Promotion of the development of quality criteria for research, intervention safety, indication and implementation of e-health interventions. Founding members in alphabetical order: Harald Baumeister, Matthias Berking, David Ebert, Severin Hennemann, Gitta Jacob, Corinna Jacobi, Christine Knaevelsrud, Lena Krämer, Jiaxi Lin, Andreas Maercker, Andreas Mühlberger, Thomas Probst, Lasse Sander, Rüdiger Zwerenz.
Archived project
To assess the effects of a 7-week Internet- and App-based stress management intervention (Studicare Stress) for distance-learning students on mental health outcomes, when compared to an active control group receiving an Internet-based psychoeducation program on stress management. Trial registry: DRKS00011800 Contact for distance-learning students who are interested in participating (German website): http://www.studicare.com/fernstudierende stress.hagen@studicare.com We are currently recruiting participants for this study!