Intended for healthcare professionals

Research Methods & Reporting

Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement

BMJ 2009; 339 doi: https://doi.org/10.1136/bmj.b2535 (Published 21 July 2009) Cite this as: BMJ 2009;339:b2535

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: July 2009 to September 2019

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AbstractFullPdf
Jul 2009012391
Aug 200908781
Sep 200903500
Oct 200902781
Nov 200903141
Dec 200902330
Jan 201002680
Feb 201004850
Mar 201005800
Apr 201004460
May 201004870
Jun 201004440
Jul 201004310
Aug 201044120
Sep 20102746481
Oct 201034486213
Nov 20104348952
Dec 2010293980
Jan 2011465520
Feb 2011365070
Mar 2011457570
Apr 2011345990
May 2011496840
Jun 2011406530
Jul 2011485830
Aug 2011626460
Sep 2011455520
Oct 2011538460
Nov 2011169760
Dec 201106460
Jan 201209700
Feb 201209350
Mar 2012010790
Apr 201209360
May 201228630
Jun 2012311960
Jul 201219190
Aug 201218860
Sep 201219700
Oct 2012010250
Nov 2012010980
Dec 201206120
Jan 201305430
Feb 201305960
Mar 201307200
Apr 201307310
May 2013013350
Jun 2013110390
Jul 2013213250
Aug 2013111030
Sep 2013011970
Oct 2013116060
Nov 2013022120
Dec 2013014010
Jan 2014113960
Feb 2014016940
Mar 2014020660
Apr 2014019840
May 2014018110
Jun 2014016500
Jul 20140147910
Aug 20140133314
Sep 2014011980
Oct 201405720
Nov 2014211650
Dec 2014414910
Jan 2015018360
Feb 2015125641
Mar 2015124540
Apr 2015325360
May 2015021340
Jun 2015115741
Jul 2015014801
Aug 2015016121
Sep 2015119220
Oct 2015019081
Nov 2015215070
Dec 2015013872
Jan 2016016270
Feb 2016115670
Mar 2016815652
Apr 2016914570
May 2016816472
Jun 2016416081
Jul 20161714945
Aug 2016613923
Sep 20161713120
Oct 2016513632
Nov 2016614701
Dec 20161014273
Jan 2017621110
Feb 2017417170
Mar 2017818850
Apr 2017316630
May 2017316310
Jun 201701292246
Jul 201701086228
Aug 201701358268
Sep 201701120331
Oct 201701406373
Nov 201701645503
Dec 201701208380
Jan 201801791581
Feb 2018241634461
Mar 201861804481
Apr 201811589521
May 2018151619506
Jun 2018121457381
Jul 201891446380
Aug 2018141276436
Sep 201801207438
Oct 201831814500
Nov 201871745530
Dec 2018132847487
Jan 2019112463507
Feb 2019101904574
Mar 2019101698588
Apr 2019161761546
May 2019131644550
Jun 201971457488
Jul 2019101447535
Aug 2019151791553
Sep 201941035371
Total95515421313143