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Bias in meta-analysis detected by a simple, graphical test

BMJ 1997; 315 doi: https://doi.org/10.1136/bmj.315.7109.629 (Published 13 September 1997) Cite this as: BMJ 1997;315:629

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 April 2019

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AbstractFullPdf
Jul 2003694240
Aug 2003693070
Sep 2003873340
Oct 20031024510
Nov 2003754270
Dec 2003873820
Jan 20041103920
Feb 2004974852
Mar 2004924741
Apr 20041155110
May 20041295820
Jun 20041606360
Jul 20041715580
Aug 20041965760
Sep 20041564620
Oct 20041215760
Nov 20041975770
Dec 20041455230
Jan 20051737340
Feb 20051465660
Mar 20051396120
Apr 2005974680
May 20051174760
Jun 20051104220
Jul 2005764630
Aug 20051253930
Sep 20051305444
Oct 20051175000
Nov 20051346820
Dec 2005954590
Jan 20061215940
Feb 20061255600
Mar 20061135940
Apr 2006995060
May 2006994620
Jun 2006774220
Jul 2006984041
Aug 2006733870
Sep 20061494241
Oct 20061184000
Nov 20061484260
Dec 20061103620
Jan 20071584430
Feb 20071003790
Mar 20071445350
Apr 2007944710
May 20071024720
Jun 20071073740
Jul 2007733050
Aug 2007783530
Sep 20071204070
Oct 20071035010
Nov 20071185530
Dec 2007734540
Jan 20081376640
Feb 2008875220
Mar 20081387160
Apr 20081206760
May 20081304880
Jun 20081884620
Jul 20081213770
Aug 20081053240
Sep 20081124451
Oct 20081256302
Nov 20081566102
Dec 20081844650
Jan 20092685702
Feb 20094585742
Mar 20097795700
Apr 20093254070
May 20093024970
Jun 20092464380
Jul 20092444231
Aug 20092344750
Sep 20092524530
Oct 20092664860
Nov 20092385620
Dec 20091255120
Jan 20101005791
Feb 20101215460
Mar 20101456681
Apr 20101386261
May 20101696860
Jun 20101335751
Jul 20101446370
Aug 20101707020
Sep 20101535860
Oct 20101917440
Nov 20101677190
Dec 20101865330
Jan 20111926560
Feb 20111956250
Mar 20113137720
Apr 20113255280
May 20113216140
Jun 20113295550
Jul 20113165290
Aug 20113335730
Sep 20113575290
Oct 20113365890
Nov 20111287410
Dec 201106770
Jan 201206760
Feb 201207120
Mar 201208320
Apr 201238320
May 20122406590
Jun 20121205300
Jul 2012307690
Aug 2012465050
Sep 2012205910
Oct 201217420
Nov 201209990
Dec 20120105530
Jan 2013082000
Feb 2013028690
Mar 2013014570
Apr 2013147970
May 20139811520
Jun 2013868500
Jul 2013907120
Aug 2013917830
Sep 2013869130
Oct 201311510020
Nov 201312111750
Dec 2013919420
Jan 2014298940
Feb 2014013670
Mar 2014012650
Apr 2014313370
May 2014114790
Jun 2014111790
Jul 2014010168
Aug 201409435
Sep 201408450
Oct 20141931209
Nov 2014402525875
Dec 2014381801406
Jan 2015481650206
Feb 2015451368200
Mar 20154212096
Apr 20156012060
May 20153410332
Jun 20152675566
Jul 20152084568
Aug 201536965124
Sep 20153573025
Oct 2015271052167
Nov 201539130839
Dec 2015631452135
Jan 201632157241
Feb 2016631748267
Mar 2016711609152
Apr 2016121154463
May 2016511716104
Jun 2016341536312
Jul 20162712122
Aug 2016301324164
Sep 2016491391315
Oct 2016301371155
Nov 2016311688321
Dec 2016381331228
Jan 2017141590235
Feb 2017616360
Mar 2017619380
Apr 2017416650
May 2017715130
Jun 2017112300
Jul 2017012030
Aug 2017012870
Sep 2017013470
Oct 2017014020
Nov 2017015630
Dec 2017013850
Jan 2018014660
Feb 20182413360
Mar 2018514060
Apr 2018312910
May 20182213940
Jun 20181411860
Jul 20181710980
Aug 20182013400
Sep 2018912480
Oct 20181514540
Nov 20182316990
Dec 20181516370
Jan 20192121780
Feb 20192212730
Mar 20191211570
Apr 201917040
Total192171791944923