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: January 2018 to April 2024

Rendering graph...
AbstractFullPdf
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
Oct 2019222447432
Nov 2019231969451
Dec 2019171736450
Jan 2020152201561
Feb 2020452875727
Mar 2020312945877
May 20203238371252
Jun 20205534291039
Jul 20206738031165
Aug 20206533311137
Sep 20203741231234
Oct 20205149241417
Nov 20203445171442
Dec 20202840211398
Jan 20216649131589
Feb 20216246471540
Mar 20218456921801
Apr 20217748491495
May 20214747081547
Jun 20216641931233
Jul 202110641891226
Aug 20216539381136
Sep 20215242301143
Oct 202110147231318
Nov 202110848161421
Dec 20215646151236
Jan 20226662061434
Feb 20227355701320
Mar 20225763511616
Apr 20227157261411
May 202210261001558
Jun 20227251191272
Jul 20225847981262
Aug 20225146631298
Sep 20224844551115
Oct 20223546371137
Nov 20221549841078
Dec 2022234225840
Jan 2023164454944
Feb 20232249941201
Mar 2023550961301
Apr 2023744371222
May 20231743691131
Jun 202384279912
Jul 2023224039856
Aug 2023164010895
Sep 2023133920834
Oct 202394135832
Nov 202384279854
Dec 2023164718851
Jan 2024335490948
Feb 2024486604897
Mar 20241550941047
Apr 202441992342
Total253827080970718