Items where Author is "Helfand, Mark"

2020

Schünemann, Holger J. and Mustafa, Reem A. and Brozek, Jan and Steingart, Karen R. and Leeflang, Mariska and Murad, Mohammad Hassan and Bossuyt, Patrick and Glasziou, Paul and Jaeschke, Roman and Lange, Stefan and Meerpohl, Joerg and Langendam, Miranda and Hultcrantz, Monica and Vist, Gunn E. and Akl, Elie A. and Helfand, Mark and Santesso, Nancy and Hooft, Lotty and Scholten, Rob and Rosen, Måns and Rutjes, Anne and Crowther, Mark and Muti, Paola and Raatz, Heike and Ansari, Mohammed T. and Williams, John and Kunz, Regina and Harris, Jeff and Rodriguez, Ingrid Arévalo and Kohli, Mikashmi and Guyatt, Gordon H. and Grade Working Group, . (2020) GRADE guidelines: 21 part 1. Study design, risk of bias, and indirectness in rating the certainty across a body of evidence for test accuracy. Journal of Clinical Epidemiology, 122. pp. 129-141.

Schünemann, Holger J. and Mustafa, Reem A. and Brozek, Jan and Steingart, Karen R. and Leeflang, Mariska and Murad, Mohammad Hassan and Bossuyt, Patrick and Glasziou, Paul and Jaeschke, Roman and Lange, Stefan and Meerpohl, Joerg and Langendam, Miranda and Hultcrantz, Monica and Vist, Gunn E. and Akl, Elie A. and Helfand, Mark and Santesso, Nancy and Hooft, Lotty and Scholten, Rob and Rosen, Måns and Rutjes, Anne and Crowther, Mark and Muti, Paola and Raatz, Heike and Ansari, Mohammed T. and Williams, John and Kunz, Regina and Harris, Jeff and Rodriguez, Ingrid Arévalo and Kohli, Mikashmi and Guyatt, Gordon H. and Grade Working Group, . (2020) GRADE guidelines: 21 part 2. Test accuracy: inconsistency, imprecision, publication bias, and other domains for rating the certainty of evidence and presenting it in evidence profiles and summary of findings tables. Journal of Clinical Epidemiology, 122. pp. 142-152.

2013

Guyatt, Gordon H. and Oxman, Andrew D. and Santesso, Nancy and Helfand, Mark and Vist, Gunn and Kunz, Regina and Brozek, Jan and Norris, Susan and Meerpohl, Joerg and Djulbegovic, Ben and Alonso-Coello, Pablo and Post, Piet N. and Busse, Jason W. and Glasziou, Paul and Christensen, Robin and Schünemann, Holger J.. (2013) GRADE guidelines: 12. Preparing summary of findings tables-binary outcomes. Journal of Clinical Epidemiology, 66 (2). pp. 158-172.

2011

Balshem, Howard and Helfand, Mark and Schünemann, Holger J. and Oxman, Andrew D. and Kunz, Regina and Brozek, Jan and Vist, Gunn E. and Falck-Ytter, Yngve and Meerpohl, Joerg and Norris, Susan and Guyatt, Gordon H.. (2011) GRADE guidelines: 3. Rating the quality of evidence. Journal of clinical epidemiology, Vol. 64, H. 4. pp. 401-406.

Guyatt, Gordon H. and Oxman, Andrew D. and Kunz, Regina and Woodcock, James and Brozek, Jan and Helfand, Mark and Alonso-Coello, Pablo and Glasziou, Paul and Jaeschke, Roman and Akl, Elie A. and Norris, Susan and Vist, Gunn and Dahm, Philipp and Shukla, Vijay K. and Higgins, Julian and Falck-Ytter, Yngve and Schünemann, Holger J. and Grade Working Group, . (2011) GRADE guidelines: 7. Rating the quality of evidence--inconsistency. Journal of clinical epidemiology, Vol. 64, H. 12. pp. 1294-1302.

Guyatt, Gordon H. and Oxman, Andrew D. and Kunz, Regina and Woodcock, James and Brozek, Jan and Helfand, Mark and Alonso-Coello, Pablo and Falck-Ytter, Yngve and Jaeschke, Roman and Vist, Gunn and Akl, Elie A. and Post, Piet N. and Norris, Susan and Meerpohl, Joerg and Shukla, Vijay K. and Nasser, Mona and Schünemann, Holger J. and Grade Working Group, . (2011) GRADE guidelines: 8. Rating the quality of evidence-indirectness. Journal of clinical epidemiology, Vol. 64, H. 12. pp. 1303-1310.

2009

Guyatt, Gordon H. and Helfand, Mark and Kunz, Regina. (2009) Comparing the USPSTF and GRADE approaches to recommendations. Annals of internal medicine, Vol. 151, H. 5 , S. 363 ; author reply 363-364.