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J. J. Meerpohl

University of Freiburg - Institute for Evidence in Medicine

SCHOLARLY PAPERS

6

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500

TOTAL CITATIONS

0

Scholarly Papers (6)

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1.

Efficacy and Effectiveness of COVID-19 Vaccines Against Post COVID-19 Condition/Long COVID: Systematic Review and Meta-Analysis

Number of pages: 25 Posted: 08 Apr 2025
Caroline Peine, Anna Stoliaroff-Pepin, Ulrich Reinacher, Katharina Heldt, Giselle Sarganas, Vanessa Piechotta, Agata Mikolajewska, Antonia Pilic, Nina Barkowski, Daniel Bleve, Marie H. Giebeler, Susanne Poser, Livia Searle, Elisabeth Kißner, Leonie Nitsche, Fatimanur Bayram, Waldemar Siemens, Annika Ziegler, J. J. Meerpohl, Frank Sandmann, Ole Wichmann and Thomas Harder
Robert Koch Institute, Robert Koch Institute, Robert Koch Institute, Robert Koch Institute, Robert Koch Institute, Robert Koch Institute - Immunisation Unit, Robert Koch Institute, Robert Koch Institute - Immunisation Unit, Robert Koch Institute, Robert Koch Institute, Robert Koch Institute, Robert Koch Institute, Robert Koch Institute, Robert Koch Institute, Robert Koch Institute, Robert Koch Institute, University of Freiburg - Institute for Evidence in Medicine, University of Freiburg, University of Freiburg - Institute for Evidence in Medicine, Robert Koch Institute, Robert Koch Institute - Immunisation Unit and Robert Koch Institute - Immunisation Unit
Downloads 148 (500,001)

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vaccine effectiveness, post COVID-19 condition, long COVID, COVID-19 vaccine

2.

Grade Concept Paper: Creating a Grade Ontology

Number of pages: 19 Posted: 02 Jun 2025
Paul Whaley, Brian Alper, Carlos Alva-Diaz, Stavros A. Antoniou, Antonio Bognanni, Javier Bracchiglione, Therese Kristine Dalsbø, Joanne Dehnbostel, Sean Grant, Jennifer Hunter, Alfonso Iorio, Malgorzata Lagisz, Harold Lehmann, Sheyu Li, J. J. Meerpohl, Saphia Mokrane, Cauê F. Monaco, Ignacio Neumann, Kevin Pottie, Shahab Sayfi, Nigar Sekercioglu, Jasvinder A. Singh, Bernardo Sousa-Pinto, Janice Tufte, Lenny Vasanthan, Li Wang, Jun Xia, Xiaomei Yao and Holger Schünemann
affiliation not provided to SSRN, Computable Publishing LLC, Universidad Cientifica del Sur, affiliation not provided to SSRN, Humanitas University, Sant Pau Research Institute, Government of India - National Institute of Occupational Health, affiliation not provided to SSRN, University of Oregon, Western Sydney University - NICM Health Research Institute, McMaster University, University of New South Wales (UNSW) - Institute of Environmental Studies, Johns Hopkins University - School of Medicine, Sichuan University - Department of Endocrinology and Metabolism, University of Freiburg - Institute for Evidence in Medicine, affiliation not provided to SSRN, affiliation not provided to SSRN, Pontificia Universidad Católica de Chile - Department of Internal Medicine, Dalhousie University, McMaster University, McMaster University, Government of the United States of America - Birmingham VA Medical Center, Universidade do Porto - Department of Community Medicine, Health Information and Decision, Cochrane Consumer, Christian Medical College, McMaster University - Department of Anesthesia, affiliation not provided to SSRN, McMaster University and Humanitas University
Downloads 146 (505,974)

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GRADE approach, Certainty of Evidence, evidence to decisions, ontology, data standards

3.

Frameworks to identify research gaps, frame research needs, and derive research priorities from evidence syntheses: a scoping review

Number of pages: 32 Posted: 14 Nov 2025
Omar Dewidar, Mouad Elganga, Martin Ringsten, Miranda Langendam, KM Saif-Ur-Rahman, Malgorzata M. Bala, Chiara Arienti, Antonio Bognanni, Andrea J. Darzi, Paweł Jemioło, Sebastian Krawczyk, Stefano G. Lazzarini, Manuel Marques-Cruz, J. J. Meerpohl, Getrud J. Mollel, Elena Parmelli, Karen A. Robinson, Bernardo Sousa-Pinto, Waldemar Siemens, Rafael José Vieira, Samuel White, Maura Marcucci and Holger Schünemann
Élisabeth Bruyere Research Institute, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, International Centre for Diarrheal Disease Research (icddr,b), Jagiellonian University Medical College, affiliation not provided to SSRN, Humanitas University, McMaster University, AGH University of Krakow, Georgia Institute of Technology, affiliation not provided to SSRN, affiliation not provided to SSRN, University of Freiburg - Institute for Evidence in Medicine, Ifakara Health Institute, Humanitas University, affiliation not provided to SSRN, Universidade do Porto - Department of Community Medicine, Health Information and Decision, University of Freiburg - Institute for Evidence in Medicine, affiliation not provided to SSRN, University of Adelaide - Medical School, affiliation not provided to SSRN and Humanitas University
Downloads 73 (1,010,164)

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Research recommendations, research gaps, GRADE, evidence-based medicine, systematic reviews, evidence synthesis, health technology assessment

4.

Efficacy, Effectiveness, Immunogenicity and Safety of HPV Vaccination in Non-HIV Immunocompromised Individuals: A Systematic Review and Meta-Analysis

Number of pages: 27 Posted: 15 Oct 2025
Philipp Kapp, Waldemar Siemens, Lea Gorenflo, Henriette Schulz, Yuan Chi, Marianne Röbl-Mathieu, Mona Askar, María Brotons, Peter Henrik Andersen, Deborah Konopnicki, Judi Lynch, Simona Ruţă, Liisa Saare, Béatrice Swennen, Ruth Tachezy, Anja Takla, Veronika Učakar, Simopekka Vänskä, Dace Zavadska, Karam Adel Ali, Kate Olsson, Thomas Harder and J. J. Meerpohl
University of Freiburg - Institute for Evidence in Medicine, University of Freiburg - Institute for Evidence in Medicine, University of Freiburg - Institute for Evidence in Medicine, University of Freiburg - Institute for Evidence in Medicine, Beijing Yealth Technology Co., Ltd., The Robert Koch Institute, The Robert Koch Institute, Hospital Duran i Reynals (ICO) - Catalan Institute of Oncology, Statens Serum Institut, Université Libre de Bruxelles, The Coombe Hospital, UMF Carol Davila, University of Tartu, Université Libre de Bruxelles, Charles University, Robert Koch Institute, National Institute of Public Health (Slovenia), Finnish Institute for Health and Welfare (THL), Riga Stradins University - Department of Paediatrics, European Centre for Disease Prevention and Control, European Centre for Disease Prevention and Control, Robert Koch Institute - Immunisation Unit and University of Freiburg - Institute for Evidence in Medicine
Downloads 69 (899,324)

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Cervical cancer, Immunogenicity, Immunocompromised, Human papilloma virus, Vaccination

5.

Clinical and Methodological Implications for Research Elements in Systematic Reviews on Covid-19 Treatment Were Often Unstructured and Insufficient – a Meta-Research Study

Number of pages: 26 Posted: 07 Jul 2023 Last Revised: 07 Mar 2024
Waldemar Siemens, G. Bantle, S. Mahler, J. Nothacker, J. Stadelmaier, E.M. Bitzer, C. Schmucker and J. J. Meerpohl
University of Freiburg - Institute for Evidence in Medicine, University of Freiburg, University of Freiburg, University of Hamburg - University Medical Center Hamburg-Eppendorf, University of Freiburg, University of Education Freiburg, University of Freiburg and University of Freiburg - Institute for Evidence in Medicine
Downloads 34 (1,263,436)

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implications for research, meta-research, methodological study, COVID-19, systematic review, GRADE

6.

Most methodological characteristics do not exaggerate exposure-outcome relationships in nutrition observational studies – findings from a meta-epidemiological study

Number of pages: 25 Posted: 16 Nov 2025
G. Bantle, J. Stadelmaier, Maria Petropoulou, J. J. Meerpohl and Lukas Schwingshackl
University of Freiburg, University of Freiburg, affiliation not provided to SSRN, University of Freiburg - Institute for Evidence in Medicine and affiliation not provided to SSRN
Downloads 30 (1,318,317)

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Meta-epidemiological study, observational studies, cohorts, nutrition, risk of bias, ROBINS-E tool, methodological trial characteristics