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8 results on '"RAMIREZ-MORERA, ANGGIE"'

1. Authors seldom report the most patient-important outcomes and absolute effect measures in systematic review abstracts

Author

Agarwal, Arnav, Johnston, Bradley C., Vernooij, Robin W.M., Carrasco-Labra, Alonso, Brignardello-Petersen, Romina, Neumann, Ignacio, Akl, Elie A., Sun, Xin, Briel, Matthias, Busse, Jason W., Ebrahim, Shanil, Granados, Carlos E., Iorio, Alfonso, Irfan, Affan, Martínez García, Laura, Mustafa, Reem A., Ramirez-Morera, Anggie, Selva, Anna, Solà, Ivan, Sanabrai, Andrea J., Tikkinen, Kari A.O., Vandvik, Per O., Zhang, Yuqing, Zazueta, Oscar E., Zhou, Qi, Schunemann, Holger J., Guyatt, Gordon H., and Alonso-Coello, Pablo

Published
2017
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2. Systematic reviews experience major limitations in reporting absolute effects

Author

Alonso-Coello, Pablo, Carrasco-Labra, Alonso, Brignardello-Petersen, Romina, Neumann, Ignacio, Akl, Elie A., Vernooij, Robin W.M., Johnston, Brad C., Sun, Xin, Briel, Matthias, Busse, Jason W., Ebrahim, Shanil, Granados, Carlos E., Iorio, Alfonso, Irfan, Affan, Martínez García, Laura, Mustafa, Reem A., Ramírez-Morera, Anggie, Selva, Anna, Solà, Ivan, Sanabria, Andrea Juliana, Tikkinen, Kari A.O., Vandvik, Per Olav, Zazueta, Oscar E., Zhang, Yuqing, Zhou, Qi, Schünemann, Holger, and Guyatt, Gordon H.

Published
2016
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4. Reporting, handling and assessing the risk of bias associated with missing participant data in systematic reviews : a methodological survey

Author

Akl, Elie A., Carrasco-Labra, Alonso, Brignardello-Petersen, Romina, Neumann, Ignacio, Johnston, Bradley C., Sun, Xin, Briel, Matthias, Busse, Jason W., Ebrahim, Shanil, Granados, Carlos E., Iorio, Alfonso, Irfan, Affan, Martinez Garcia, Laura, Mustafa, Reem A., Ramirez-Morera, Anggie, Selva, Anna, Sola, Ivan, Sanabria, Andrea Juliana, Tikkinen, Kari A. O., Vandvik, Per O., Vernooij, Robin W. M., Zazueta, Oscar E., Zhou, Qi, Guyatt, Gordon H., Alonso-Coello, Pablo, Urologian yksikkö, University of Helsinki, Clinicum, and Department of Public Health

Subjects
INFORMATION, ADDRESSING CONTINUOUS DATA, education, TRIALS LOST-IT, POTENTIAL IMPACT, UNCERTAINTY, FOLLOW-UP, GUIDE, CLINICAL-TRIALS, METAANALYSIS, 3142 Public health care science, environmental and occupational health
Abstract

Objectives: To describe how systematic reviewers are reporting missing data for dichotomous outcomes, handling them in the analysis and assessing the risk of associated bias. Methods: We searched MEDLINE and the Cochrane Database of Systematic Reviews for systematic reviews of randomised trials published in 2010, and reporting a meta-analysis of a dichotomous outcome. We randomly selected 98 Cochrane and 104 non-Cochrane systematic reviews. Teams of 2 reviewers selected eligible studies and abstracted data independently and in duplicate using standardised, piloted forms with accompanying instructions. We conducted regression analyses to explore factors associated with using complete case analysis and with judging the risk of bias associated with missing participant data. Results: Of Cochrane and non-Cochrane reviews, 47% and 7% (p Conclusions: Though Cochrane reviews are somewhat less problematic, most Cochrane and non-Cochrane systematic reviews fail to adequately report and handle missing data, potentially resulting in misleading judgements regarding risk of bias.

Published
2015

5. Reporting, handling and assessing the risk of bias associated with missing participant data in systematic reviews

Author

University of Helsinki, Clinicum, Akl, Elie A., Carrasco-Labra, Alonso, Brignardello-Petersen, Romina, Neumann, Ignacio, Johnston, Bradley C., Sun, Xin, Briel, Matthias, Busse, Jason W., Ebrahim, Shanil, Granados, Carlos E., Iorio, Alfonso, Irfan, Affan, Martinez Garcia, Laura, Mustafa, Reem A., Ramirez-Morera, Anggie, Selva, Anna, Sola, Ivan, Sanabria, Andrea Juliana, Tikkinen, Kari A. O., Vandvik, Per O., Vernooij, Robin W. M., Zazueta, Oscar E., Zhou, Qi, Guyatt, Gordon H., Alonso-Coello, Pablo, University of Helsinki, Clinicum, Akl, Elie A., Carrasco-Labra, Alonso, Brignardello-Petersen, Romina, Neumann, Ignacio, Johnston, Bradley C., Sun, Xin, Briel, Matthias, Busse, Jason W., Ebrahim, Shanil, Granados, Carlos E., Iorio, Alfonso, Irfan, Affan, Martinez Garcia, Laura, Mustafa, Reem A., Ramirez-Morera, Anggie, Selva, Anna, Sola, Ivan, Sanabria, Andrea Juliana, Tikkinen, Kari A. O., Vandvik, Per O., Vernooij, Robin W. M., Zazueta, Oscar E., Zhou, Qi, Guyatt, Gordon H., and Alonso-Coello, Pablo

Abstract

Objectives: To describe how systematic reviewers are reporting missing data for dichotomous outcomes, handling them in the analysis and assessing the risk of associated bias. Methods: We searched MEDLINE and the Cochrane Database of Systematic Reviews for systematic reviews of randomised trials published in 2010, and reporting a meta-analysis of a dichotomous outcome. We randomly selected 98 Cochrane and 104 non-Cochrane systematic reviews. Teams of 2 reviewers selected eligible studies and abstracted data independently and in duplicate using standardised, piloted forms with accompanying instructions. We conducted regression analyses to explore factors associated with using complete case analysis and with judging the risk of bias associated with missing participant data. Results: Of Cochrane and non-Cochrane reviews, 47% and 7% (p Conclusions: Though Cochrane reviews are somewhat less problematic, most Cochrane and non-Cochrane systematic reviews fail to adequately report and handle missing data, potentially resulting in misleading judgements regarding risk of bias.

Published
2015

6. Erratum to: A methodological survey of the analysis, reporting and interpretation of Absolute Risk ReductiOn in systematic revieWs (ARROW): a study protocol

Author

Alonso-Coello, Pablo, primary, Carrasco-Labra, Alonso, additional, Brignardello-Petersen, Romina, additional, Neumann, Ignacio, additional, Akl, Elie A, additional, Sun, Xin, additional, Johnston, Bradley C, additional, Briel, Matthias, additional, Busse, Jason W, additional, Glujovsky, Demián, additional, Granados, Carlos E, additional, Iorio, Alfonso, additional, Irfan, Affan, additional, Martínez García, Laura, additional, Mustafa, Reem A, additional, Ramirez-Morera, Anggie, additional, Solà, Iván, additional, Tikkinen, Kari A O, additional, Ebrahim, Shanil, additional, Vandvik, Per O, additional, Zhang, Yuqing, additional, Selva, Anna, additional, Sanabria, Andrea J, additional, Zazueta, Oscar E, additional, Vernooij, Robin W M, additional, Schünemann, Holger J, additional, and Guyatt, Gordon H, additional

Published
2014
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7. A methodological survey of the analysis, reporting and interpretation of Absolute Risk ReductiOn in systematic revieWs (ARROW): a study protocol

Author

Alonso-Coello, Pablo, primary, Carrasco-Labra, Alonso, additional, Brignardello-Petersen, Romina, additional, Neumann, Ignacio, additional, Akl, Elie A, additional, Sun, Xin, additional, Johnston, Bradley C, additional, Briel, Matthias, additional, Busse, Jason W, additional, Glujovsky, Demián, additional, Granados, Carlos E, additional, Iorio, Alfonso, additional, Irfan, Affan, additional, García, Laura M, additional, Mustafa, Reem A, additional, Ramirez-Morera, Anggie, additional, Solà, Iván, additional, Tikkinen, Kari A O, additional, Ebrahim, Shanil, additional, Vandvik, Per O, additional, Zhang, Yuqing, additional, Selva, Anna, additional, Sanabria, Andrea J, additional, Zazueta, Oscar E, additional, Vernooij, Robin W M, additional, Schünemann, Holger J, additional, and Guyatt, Gordon H, additional

Published
2013
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