Intended for healthcare professionals

Education And Debate

meta-analysis bias in location and selection of studies

BMJ 1998; 316 doi: https://doi.org/10.1136/bmj.316.7124.61 (Published 03 January 1998) Cite this as: BMJ 1998;316:61

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 2003 to May 2020

Rendering graph...
AbstractFullPdf
Jul 200301400
Aug 200301560
Sep 200302040
Oct 200302210
Nov 200302990
Dec 200302040
Jan 200402110
Feb 200411820
Mar 200423081
Apr 200402290
May 200403200
Jun 200402981
Jul 200423070
Aug 200412460
Sep 200471980
Oct 2004203470
Nov 2004202310
Dec 2004272570
Jan 2005162270
Feb 2005151770
Mar 2005182310
Apr 2005182050
May 2005111980
Jun 200541250
Jul 200561350
Aug 2005201892
Sep 200581890
Oct 2005293710
Nov 2005182491
Dec 2005162950
Jan 2006212560
Feb 2006232100
Mar 2006132280
Apr 2006152310
May 2006152202
Jun 2006161820
Jul 2006141630
Aug 2006201920
Sep 2006281900
Oct 2006403280
Nov 200661753
Dec 200616960
Jan 2007111730
Feb 2007111510
Mar 2007202300
Apr 2007221520
May 2007201820
Jun 2007161500
Jul 2007101220
Aug 2007131300
Sep 2007111620
Oct 2007192680
Nov 2007402220
Dec 2007171360
Jan 2008301630
Feb 2008231990
Mar 2008522550
Apr 2008312470
May 2008151930
Jun 2008241870
Jul 200851510
Aug 2008241300
Sep 2008351710
Oct 2008604060
Nov 2008471810
Dec 2008661510
Jan 2009811260
Feb 200971860
Mar 20091101450
Apr 20091081770
May 2009102820
Jun 200953800
Jul 200973770
Aug 200967920
Sep 200980790
Oct 2009741001
Nov 2009851561
Dec 200972700
Jan 201077670
Feb 201057520
Mar 2010801060
Apr 2010341310
May 201026980
Jun 201032810
Jul 201040720
Aug 201037710
Sep 2010103650
Oct 20101031260
Nov 2010147830
Dec 2010117430
Jan 2011118450
Feb 2011129960
Mar 20111531480
Apr 2011107800
May 2011168600
Jun 2011106520
Jul 201176550
Aug 2011351170
Sep 201128750
Oct 2011321590
Nov 2011102120
Dec 201101660
Jan 2012129770
Feb 2012170660
Mar 20121351050
Apr 2012115730
May 201264380
Jun 201217360
Jul 201230460
Aug 201216490
Sep 201251470
Oct 2012116690
Nov 20121631010
Dec 201251290
Jan 201346270
Feb 201345210
Mar 201364340
Apr 201345300
May 201354330
Jun 201357200
Jul 201358410
Aug 201333270
Sep 201370330
Oct 201377580
Nov 2013101540
Dec 201380450
Jan 201493410
Feb 201467390
Mar 201472270
Apr 2014101210
May 201480250
Jun 201485200
Jul 201431282
Aug 201476310
Sep 201451230
Oct 201441260
Nov 201480190
Dec 201485360
Jan 201563220
Feb 201578450
Mar 20151031046
Apr 2015106450
May 201560311
Jun 201545180
Jul 201541220
Aug 201558200
Sep 201531220
Oct 2015228440
Nov 20152065618
Dec 201577300
Jan 201685100
Feb 201684720
Mar 2016744216
Apr 201681210
May 2016108240
Jun 201670200
Jul 2016431060
Aug 201645390
Sep 201682230
Oct 2016104821
Nov 201693171
Dec 201692560
Jan 201774340
Feb 201790310
Mar 201784320
Apr 201768130
May 201773240
Jun 201764210
Jul 201752320
Aug 201770250
Sep 201769240
Oct 2017104350
Nov 2017171290
Dec 201786370
Jan 2018239250
Feb 2018316470
Mar 2018235560
Apr 2018145440
May 2018262310
Jun 2018234400
Jul 2018253290
Aug 2018169300
Sep 2018147390
Oct 201891380
Nov 201868370
Dec 201888150
Jan 201965160
Feb 2019119300
Mar 201984470
Apr 201970320
May 2019108420
Jun 2019100400
Jul 201974260
Aug 2019139520
Sep 201982290
Oct 2019140510
Nov 201992260
Dec 201981200
Jan 202099350
Feb 202086460
Mar 2020110380
Apr 2020139190
May 2020276400
Total136932138557