Intended for healthcare professionals

Education And Debate

Meta-analysis Spurious precision? Meta-analysis of observational studies

BMJ 1998; 316 doi: https://doi.org/10.1136/bmj.316.7125.140 (Published 10 January 1998) Cite this as: BMJ 1998;316:140

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 October 2019

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AbstractFullPdf
Jul 200302550
Aug 200302130
Sep 200303520
Oct 200304740
Nov 200303550
Dec 200332970
Jan 200413090
Feb 200413241
Mar 200403471
Apr 200403590
May 200424320
Jun 200403610
Jul 200414670
Aug 200433930
Sep 2004123670
Oct 2004154141
Nov 2004193730
Dec 2004363490
Jan 2005414590
Feb 2005243270
Mar 2005193840
Apr 2005193480
May 2005262810
Jun 2005283250
Jul 2005222810
Aug 2005122363
Sep 2005203190
Oct 2005193820
Nov 2005213421
Dec 2005223290
Jan 2006273550
Feb 2006153640
Mar 2006283630
Apr 2006273420
May 2006142883
Jun 2006182440
Jul 2006162460
Aug 2006162350
Sep 2006173090
Oct 2006163730
Nov 2006264423
Dec 2006182610
Jan 2007153050
Feb 2007353300
Mar 2007333520
Apr 2007263530
May 2007293640
Jun 2007282720
Jul 2007232270
Aug 2007212840
Sep 2007282710
Oct 2007374030
Nov 2007423350
Dec 2007312060
Jan 2008373321
Feb 2008563401
Mar 2008653440
Apr 2008453870
May 2008324050
Jun 2008353320
Jul 2008373520
Aug 2008283130
Sep 2008493520
Oct 2008523410
Nov 2008493301
Dec 2008382150
Jan 2009781710
Feb 2009902160
Mar 20091092660
Apr 2009932451
May 20091191460
Jun 2009781050
Jul 2009931220
Aug 2009811230
Sep 2009811310
Oct 2009921220
Nov 2009821401
Dec 200991930
Jan 20101141250
Feb 20101241190
Mar 20101031430
Apr 2010901230
May 2010831270
Jun 2010901180
Jul 2010811140
Aug 201080941
Sep 201070760
Oct 2010117760
Nov 201074520
Dec 201087570
Jan 2011127920
Feb 2011991000
Mar 20111151090
Apr 2011108770
May 201186820
Jun 2011901050
Jul 2011901120
Aug 2011711670
Sep 2011581950
Oct 2011571370
Nov 2011171990
Dec 201102100
Jan 20121531130
Feb 2012154660
Mar 2012120630
Apr 201291720
May 201272640
Jun 201225610
Jul 201223530
Aug 201238490
Sep 201231560
Oct 2012102760
Nov 2012104650
Dec 201246250
Jan 201341370
Feb 201362310
Mar 201338380
Apr 201359310
May 201364520
Jun 201391470
Jul 201377650
Aug 201361440
Sep 201356450
Oct 201384610
Nov 2013104520
Dec 2013152560
Jan 2014135370
Feb 201482570
Mar 2014115550
Apr 2014139390
May 2014103570
Jun 201494380
Jul 201411520
Aug 201465502
Sep 201488560
Oct 20143960
Nov 201465180
Dec 201475410
Jan 201577290
Feb 201580531
Mar 201583680
Apr 201596640
May 2015239620
Jun 201581221
Jul 201562482
Aug 201577444
Sep 2015130340
Oct 2015310530
Nov 20153859440
Dec 2015134540
Jan 201695490
Feb 201670420
Mar 2016696325
Apr 201647240
May 201685330
Jun 2016924836
Jul 2016784928
Aug 201659190
Sep 201635240
Oct 201669420
Nov 201660290
Dec 2016676938
Jan 201753210
Feb 201753260
Mar 201775500
Apr 201771340
May 201771270
Jun 201768340
Jul 201760370
Aug 201758430
Sep 201777480
Oct 201757300
Nov 201761380
Dec 2017114350
Jan 201892450
Feb 201876450
Mar 201866350
Apr 2018104290
May 201850250
Jun 201845210
Jul 201848160
Aug 201854290
Sep 201852140
Oct 201885430
Nov 201866400
Dec 201893300
Jan 201966230
Feb 201980370
Mar 201974550
Apr 201979620
May 201986350
Jun 201997410
Jul 201969290
Aug 2019177480
Sep 2019131290
Oct 201920130
Total1255030921196