Lea Decker

research associate

Research focus on prevention and rehabilitation

Phone: +49 511 532 34398
Fax: +49 511 532 5376
E-mail: Decker.Lea@mh-hannover.de

University education

01/2020 - 01/2023
M.Sc. Psychology, specializing in Health and Sport Psychology, PFH Göttingen

09/2016 - 09/2019
B.Sc. Psychology, specializing in clinical psychology, Rijksuniversiteit Groningen

Professional career

since 04/2023
Research Associate, Institute of Epidemiology, Social Medicine and Public Health Research MHH

02/2022 - 03/2023
Working student, Institute of Epidemiology, Social Medicine and Public Health Research MHH

11/2021 - 01/2022
Working student, Leibniz University Hannover

03/2021 - 07/2021
Working student, Chamber of Psychotherapists of Lower Saxony

Projects

Evaluation of the implementation and effectiveness of the framework strategy for school health promotion Weitblick - EVA-Weitblick

Effectiveness of the local prevention system Communities That Care (CTC-EFF)

Publication

Decker L, von Holt I, Ünlü S, Walter U, Röding D (2025). Early Effects of Communities That Care on the Adoption and Implementation Fidelity of Evidence-Based Prevention Programs in Communities: Results from a Quasi-experimental Study. Prev Sci (2025). doi.org/10.1007/s11121-025-01823-w

Röding D, Lenz MC, von Holt I, Decker L, Walter U (2025). Factors influencing the implementation of prevention strategies - validation of a measurement instrument for the school context. Prev Gesundheitsf (2025). doi.org/10.1007/s11553-025-01208-5

von Holt I, Decker L, Röding D, Ünlü S, Walter U (2025). Evidence on the effectiveness of CTC in Germany - results of a re-analysis of data from the CTC-EFF study. forum kriminalprävention 2/2025 S 19-22

Walter U, Ünlü S, Decker L, von Holt I, Röding D (2025). Recommendations for the implementation of Communities That Care. https://wegweiser-gruene-liste.de/fileadmin/user_upload/wwgl/PDFs/CTC-Handlungsempfehlungen.pdf

Röding D, von Holt I, Decker L, Ünlü S, Walter U (2024). Community health literacy and community capacity development. Präv Gesundheitsf. doi.org/10.1007/s11553-024-01143-x

Birgel V, Decker D, Röding D & Walter U (2023). Community capacity for prevention and health promotion: a scoping review on underlying domains and assessment methods. Systematic Reviews (2023) 12:147, DOI 10.1186/s13643-023-02314-1

Röding D, Birgel V, Decker L, Ünlü S, Walter U (2023). How does community-based prevention work for children and adolescents? Initial findings from the CTC-EFF study. Journal Forum Crime Prevention. 01/2023, pp. 13-15

published abstracts

Decker L, Röding D, von Holt I, Walter U (2025). Measuring school capacity at health promoting schools: a validation study, European Journal of Public Health, Volume 35, Issue Supplement_4, October 2025, ckaf161.1676, doi.org/10.1093/eurpub/ ckaf161.1676

Röding D, von Holt I, Decker L, Ünlü S, Walter U (2025). How Communities That Care strengthens evidence-based practice in Germany – community-level analyses, European Journal of Public Health, Volume 35, Issue Supplement_4, October 2025, ckaf161.1494, doi.org/10.1093/eurpub/ckaf161.1494

von Holt I, Decker L, Ünlü S, Walter U, Röding D (2025). Factors Influencing the Effectiveness of Communities That Care in Germany: A Meta-Analysis, European Journal of Public Health, Volume 35, Issue Supplement_4, October 2025, ckaf161.173, doi.org/10.1093/eurpub/ ckaf161.173

Decker L, Röding D, von Holt I, Ünlü S, Walter U (2024). Dissemination, implementation fidelity and reach of evidence-based programs - analysis of baseline equivalence in the CTC-EFF study. Health - together. Cooperation conference of the German Society for Medical Informatics, Biometry and Epidemiology (GMDS), German Society for Social Medicine and Prevention (DGSMP), German Society for Epidemiology (DGEpi), German Society for Medical Sociology (DGMS) and the German Society for Public Health (DGPH). Dresden, 08-13.09.2024. Düsseldorf: German Medical Science GMS Publishing House; 2024. doc abstr. 262. doi: 10.3205/24gmds300

Röding D, Decker L, von Holt I, Ünlü S, Walter U (2024). Effects of Communities That Care on community prevention structures - results of the quasi-experimental CTC-EFF study. Health - together. Cooperation conference of the German Society for Medical Informatics, Biometry and Epidemiology (GMDS), German Society for Social Medicine and Prevention (DGSMP), German Society for Epidemiology (DGEpi), German Society for Medical Sociology (DGMS) and the German Society for Public Health (DGPH). Dresden, 08-13.09.2024. Düsseldorf: German Medical Science GMS Publishing House; 2024. doc abstr. 13. doi: 10.3205/24gmds298

Ünlü S, von Holt I, Röding D, Decker L, Walter U (2024). Implementation of the municipal prevention system Communities That Care: An analysis of conditions for success. Health - together. Cooperation conference of the German Society for Medical Informatics, Biometry and Epidemiology (GMDS), German Society for Social Medicine and Prevention (DGSMP), German Society for Epidemiology (DGEpi), German Society for Medical Sociology (DGMS) and the German Society for Public Health (DGPH). Dresden, 08-13.09.2024. Düsseldorf: German Medical Science GMS Publishing House; 2024. docAbstr. 1056. doi: 10.3205/24gmds304

von Holt I, Röding D, Decker L, Ünlü S, Walter U (2024). Municipal health literacy and municipal capacity development - results of the CTC-EFF study on the development of municipal capacity for prevention and health promotion (PGF) in Germany. Health - together. Cooperation conference of the German Society for Medical Informatics, Biometry and Epidemiology (GMDS), German Society for Social Medicine and Prevention (DGSMP), German Society for Epidemiology (DGEpi), German Society for Medical Sociology (DGMS) and the German Society for Public Health (DGPH). Dresden, 08-13.09.2024. Düsseldorf: German Medical Science GMS Publishing House; 2024. docAbstr. 718. doi: 10.3205/24gmds302

Birgel V, Röding D, Decker L, Walter U (2023). Relationship between community capacity and alcohol, tobacco and drug use among adolescents: Results of a multilevel analysis. Public Health 2023; 85(08/09): 784 - 784. doi:10.1055/s-0043-1770512

Birgel V, Röding D, Decker L, Walter U (2023). Relationship between community capacity and the implementation of evidence-based prevention and health promotion strategies: results of a community-level analysis. Public Health 2023; 85(08/09): 784 - 784. doi:10.1055/s-0043-1770513

Decker L, Röding D, Birgel V, Walter U (2023). Success conditions for implementation, implementation fidelity and reach of evidence-based prevention programs - results of the CTC-EFF study. Healthcare 2023; 85(08/09): 784 - 784. doi:10.1055/s-0043-1770511

Birgel V, Decker L, Röding D, Walter U (2022). Community Capacity for Prevention and Health Promotion: Systematic review of dimensions and survey methods. Public Health 2022; 84: 816 DOI 10.1055/s-0042-1753836

Birgel V, Röding D, Groeger-Roth F, Decker L, Walter U (2022). System change as an outcome of community health promotion - A validation study. Public Health 2022; 84: 748 DOI 10.1055/s-0042-1753674