Items where Author is "Helfand, Mark"

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.