Browsing by Author "Zhang, Yuqing"

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    A methodological survey of the analysis, reporting and interpretation of Absolute Risk ReductiOn in systematic revieWs (ARROW): a study protocol
    (2013) Alonso-Coello, Pablo; Carrasco-Labra, Alonso; Brignardello-Petersen, Romina; Neumann Burotto, Gonzalo Ignacio; Akl, Elie A; Sun, Xin; Johnston, Bradley C; Briel, Matthias; Busse, Jason W; Glujovsky, Demián; Granados, Carlos E; Iorio, Alfonso; Irfan, Affan; García, Laura M; Mustafa, Reem A; Ramirez-Morera, Anggie; Solà, Iván; Tikkinen, Kari A O; Ebrahim, Shanil; Vandvik, Per O; Zhang, Yuqing; Selva, Anna; Sanabria, Andrea J; Zazueta, Oscar E; Vernooij, Robin W M; Schünemann, Holger J; Guyatt, Gordon H
    Abstract Background Clinicians, providers and guideline panels use absolute effects to weigh the advantages and downsides of treatment alternatives. Relative measures have the potential to mislead readers. However, little is known about the reporting of absolute measures in systematic reviews. The objectives of our study are to determine the proportion of systematic reviews that report absolute measures of effect for the most important outcomes, and ascertain how they are analyzed, reported and interpreted. Methods/design We will conduct a methodological survey of systematic reviews published in 2010. We will conduct a 1:1 stratified random sampling of Cochrane vs. non-Cochrane systematic reviews. We will calculate the proportion of systematic reviews reporting at least one absolute estimate of effect for the most patient-important outcome for the comparison of interest. We will conduct multivariable logistic regression analyses with the reporting of an absolute estimate of effect as the dependent variable and pre-specified study characteristics as the independent variables. For systematic reviews reporting an absolute estimate of effect, we will document the methods used for the analysis, reporting and interpretation of the absolute estimate. Discussion Our methodological survey will inform current practices regarding reporting of absolute estimates in systematic reviews. Our findings may influence recommendations on reporting, conduct and interpretation of absolute estimates. Our results are likely to be of interest to systematic review authors, funding agencies, clinicians, guideline developers and journal editors.
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    American Society of Hematology 2020 guidelines for management of venous thromboembolism: treatment of deep vein thrombosis and pulmonary embolism
    (2020) Ortel, Thomas L.; Neumann, Ignacio; Ageno, Walter; Beyth, Rebecca; Clark, Nathan P.; Cuker, Adam; Hutten, Barbara A.; Jaff, Michael R.; Manja, Veena; Schulman, Sam; Thurston, Caitlin; Vedantham, Suresh; Verhamme, Peter; Witt, Daniel M.; Florez, Ivan D.; Izcovich, Ariel; Nieuwlaat, Robby; Ross, Stephanie; Schunemann, Holger J.; Wiercioch, Wojtek; Zhang, Yuan; Zhang, Yuqing
    Background: Venous thromboembolism (VTE), which includes deep vein thrombosis (DVT) and pulmonary embolism (PE), occurs in; 1 to 2 individuals per 1000 each year, corresponding to;300 000 to 600 000 events in the United States annually.
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    Reporting missing participant data in randomised trials : systematic survey of the methodological literature and a proposed guide
    (2015) Akl, Elie A.; Shawwa, Khled; Kahale, Lara A.; Agoritsas, Thomas; Brignardello Petersen, Romina; Busse, Jason W.; Carrasco Labra, Alonso; Ebrahim, Shanil; Johnston, Bradley C.; Neumann Burotto, Gonzalo Ignacio; Sola, Ivan; Sun, Xin; Vandvik, Per; Zhang, Yuqing; Alonso Coello, Pablo; Guyatt, Gordon H.
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    Women’s Values and Preferences for Thromboprophylaxis during Pregnancy : A Comparison of Direct-choice and Decision Analysis using Patient Specific Utilities
    (2015) Eckman, Mark H.; Alonso-Coello, Pablo; Guyatt, Gordon H.; Ebrahim, Shanil; Tikkinen, Kari A.O.; Lopes, Luciane Cruz; Neumann Burotto, Gonzalo Ignacio; Mcdonald, Sarah D.; Zhang, Yuqing; Zhou, Qi; Akl, Elie A.; Jacobsen, Ann Flem; Santamaría, Amparo; Annichino-Bizzacchi, Joyce Maria; Bitar, Wael; Sandset, Per Morten; Bates, Shannon M.