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Research Methods & Reporting

How to avoid common problems when using ClinicalTrials.gov in research: 10 issues to consider

BMJ 2018; 361 doi: https://doi.org/10.1136/bmj.k1452 (Published 25 May 2018) Cite this as: BMJ 2018;361:k1452

Article usage

Article metrics provide readers and authors with an indication of how often a specific article has been accessed month by month. It counts three formats - abstract/extract, full text and pdf. The page is updated each day.

Usage statistics: May 2018 to May 2022

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AbstractFullPdf
May 201892364248
Jun 2018102593368
Jul 2018132279300
Aug 2018101095219
Sep 20187779157
Oct 20187802158
Nov 201861097132
Dec 201810995101
Jan 2019191113123
Feb 201913103093
Mar 201917944128
Apr 201915960129
May 20197839115
Jun 2019101151130
Jul 20191199797
Aug 2019121173120
Sep 2019121172111
Oct 201912170890
Nov 2019171023103
Dec 2019574385
Jan 202018881141
Feb 202031985206
Mar 202013972155
Apr 202013897146
May 202015853104
Jun 2020765779
Jul 20201379787
Aug 20201463378
Sep 2020951478
Oct 2020856997
Nov 20201655378
Dec 20201050772
Jan 20213263967
Feb 20212055183
Mar 20211584488
Apr 20211982193
May 20211964990
Jun 20211064885
Jul 20212348984
Aug 20212159990
Sep 20211947990
Oct 20211654195
Nov 202118560125
Dec 20212165087
Jan 202222699116
Feb 20221272088
Mar 20221583783
Apr 20222579277
May 20221455765
Total710447505834