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Comment
. 2019 Aug 28:366:l4898.
doi: 10.1136/bmj.l4898.

RoB 2: a revised tool for assessing risk of bias in randomised trials

Jonathan A C Sterne  1   2 , Jelena Savović  3   4 , Matthew J Page  5 , Roy G Elbers  3 , Natalie S Blencowe  3   2 , Isabelle Boutron  6   7   8 , Christopher J Cates  9 , Hung-Yuan Cheng  3   2 , Mark S Corbett  10 , Sandra M Eldridge  11 , Jonathan R Emberson  12 , Miguel A Hernán  13 , Sally Hopewell  14 , Asbjørn Hróbjartsson  15   16   17 , Daniela R Junqueira  18 , Peter Jüni  19 , Jamie J Kirkham  20 , Toby Lasserson  21 , Tianjing Li  22 , Alexandra McAleenan  3 , Barnaby C Reeves  2   23 , Sasha Shepperd  24 , Ian Shrier  25 , Lesley A Stewart  10 , Kate Tilling  3   2   26 , Ian R White  27 , Penny F Whiting  3   4 , Julian P T Higgins  3   2   4
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RoB 2: a revised tool for assessing risk of bias in randomised trials

Jonathan A C Sterne et al. BMJ. .
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Conflict of interest statement

Competing interests: All authors have completed the ICMJE uniform disclosure form at www.icmje.org/coi_disclosure.pdf and declare: support from the MRC and Wellcome Trust for the submitted work; JACS reports grants from the MRC and NIHR during the conduct of the study; JS reports grants from the MRC, Cochrane Collaboration, and NIHR during the conduct of the study; CJC is one of the coordinating editors of Cochrane Airways and has responsibility for training Cochrane authors in the UK in Cochrane methodology (including the assessment of risks of bias); JRE reports grants from the MRC and Boehringer Ingelheim, outside the submitted work; MAH reports grants from the National Institutes of Health (NIH) during the conduct of the study; PJ serves as an unpaid member of the steering group of cardiovascular trials funded by Astra Zeneca, Biotronik, Biosensors, St Jude Medical, and The Medicines Company, has received research grants to the institution from Astra Zeneca, Biotronik, Biosensors International, Eli Lilly, and The Medicines Company, and honorariums to the institution for participation in advisory boards from Amgen, but has not received personal payments by any pharmaceutical company or device manufacturer; JJK reports personal fees from BMJ outside the submitted work; TLa is an employee of Cochrane; TLi reports grants from the NIH National Eye Institute, and the Patient-Centered Outcomes Research Institute during the conduct of the study; AM reports grants from MRC and Cancer Research UK during the conduct of the study; KT reports grants from MRC during the conduct of the study and personal fees from CHDI outside the submitted work; JPTH reports grants from the MRC and Cochrane Collaboration during the conduct of the study; the authors declare no other relationships or activities that could appear to have influenced the submitted work.

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