Waldemar Siemens

10PUBLICATIONS
23CO-AUTHORS
Decision makingCentral and Eastern European literature (incl. Russian)Political economy and social changePacific Peoples sport and physical activityRespiratory diseases
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Publications (10)

|Sep 02, 2026
Disentangling the GRADE Domains of Inconsistency and Imprecision: An Approach Based on a Meta-Research Study.

|Apr 13, 2026
Non-dissemination in qualitative health research-A retrospective cohort study of conference abstracts.

Marwin Weber, Markus Toews, Waldemar Siemens

|Dec 20, 2023
How the COVID-19 pandemic and related school closures reduce physical activity among children and adolescents in the WHO European Region: a systematic review and meta-analysis.

Helena Ludwig-Walz, Waldemar Siemens, Sarah Heinisch

|Sep 20, 2023
Physical activity and physical fitness among children and adolescents after the onset of the COVID-19 pandemic in the WHO European Region: a systematic review protocol.

Helena Ludwig-Walz, Waldemar Siemens, Sarah Heinisch

|Mar 06, 2023
Effect of opioids for breathlessness in heart failure: a systematic review and meta-analysis.

Jan Gaertner, Tanja Fusi-Schmidhauser, Stephanie Stock

|Dec 21, 2021
Reevaluation of statistically significant meta-analyses in advanced cancer patients using the Hartung-Knapp method and prediction intervals-A methodological study.

Waldemar Siemens, Joerg J Meerpohl, Miriam S Rohe

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Frequent Collaborators

3 joint publications

Gerhild Becker

3 joint publications

Jan Gaertner

3 joint publications

Joerg J Meerpohl

2 joint publications

Martin Bujard