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Restrictions and their reporting in systematic reviews of effectiveness: an observational study

2022 . Helbach, Jasmin | Pieper, Dawid | Mathes, Tim | Rombey, Tanja | Zeeb, Hajo | Allers, Katharina | Hoffmann, Falk

Sample size recalculation based on the prevalence in a randomized test-treatment study

2022 . Hot, Amra | Benda, Norbert | Bossuyt, Patrick M. | Gerke, Oke | Vach, Werner | Zapf, Antonia

Facilitating harmonized data quality assessments. A data quality framework for observational health research data collections with software implementations in R

2021 . Schmidt, Carsten Oliver | Struckmann, Stephan | Enzenbach, Cornelia | Reineke, Achim | Stausberg, Jürgen | Damerow, Stefan | Huebner, Marianne | Schmidt, Börge | Sauerbei, Willi | Richter, Adrian

Joint analysis of duration of ventilation, length of intensive care, and mortality of COVID-19 patients: a multistate approach

2020 . Hazard, Derek | Kaier, Klaus | von Cube, Maja | Grodd, Marlon | Bugiera, Lars | Lambert, Jerome | Wolkewitz, Martin

Coronavirus disease 2019 (COVID-19): an evidence map of medical literature

Social media as a recruitment platform for a nationwide online survey of COVID-19 knowledge, beliefs, and practices in the United States: methodology and feasibility analysis

2020 . Ali, Shahmir H. | Foreman, Joshua | Capasso, Ariadna | Jones, Abbey M. | Tozan, Yesim | DiClemente, Ralph J.

Participants who were difficult to recruit at baseline are less likely to complete a follow-up questionnaire – results from the German National Cohort

2020 . Rach, Stefan | Günther, Kathrin | Hadeler, Birte

Group testing performance evaluation for SARS-CoV-2 massive scale screening and testing

2020 . Nalbantoglu, Ozkan Ufuk

Methodological challenges of analysing COVID-19 data during the pandemic

2020 . Wolkewitz, Martin | Puljak, Livia

Incidence of advanced colorectal cancer in Germany: comparing claims data and cancer registry data

2019 . Oppelt, Katja Anita | Luttmann, Sabine | Kraywinkel, Klaus | Haug, Ulrike

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