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Papers

Publication bias: evidence of delayed publication in a cohort study of clinical research projects

BMJ 1997; 315 doi: https://doi.org/10.1136/bmj.315.7109.640 (Published 13 September 1997) Cite this as: BMJ 1997;315:640

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 2020

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AbstractFullPdf
Jul 200328740
Aug 200317690
Sep 2003231060
Oct 2003301080
Nov 2003422110
Dec 200325900
Jan 2004311310
Feb 200431920
Mar 2004521430
Apr 2004321130
May 2004411280
Jun 2004391750
Jul 2004471830
Aug 2004321600
Sep 2004221480
Oct 2004251410
Nov 2004471500
Dec 2004481680
Jan 2005491800
Feb 2005521670
Mar 2005401630
Apr 2005341190
May 2005251220
Jun 2005451570
Jul 2005401340
Aug 2005362600
Sep 2005521520
Oct 2005511460
Nov 2005342070
Dec 2005421160
Jan 2006461470
Feb 2006391420
Mar 2006361380
Apr 200635740
May 200624810
Jun 2006371000
Jul 200635891
Aug 200648900
Sep 200634870
Oct 2006801510
Nov 2006591070
Dec 200639630
Jan 200743880
Feb 200728860
Mar 200740820
Apr 200741910
May 200731600
Jun 200719550
Jul 200721350
Aug 200730580
Sep 200721570
Oct 200736820
Nov 200719840
Dec 200721580
Jan 200822450
Feb 200819980
Mar 2008311230
Apr 200833930
May 200830930
Jun 200842610
Jul 200840640
Aug 200836490
Sep 200827750
Oct 200822870
Nov 200833930
Dec 200821510
Jan 200917510
Feb 200915610
Mar 2009232030
Apr 200960550
May 200972430
Jun 200961391
Jul 200982540
Aug 200972680
Sep 200960610
Oct 2009681160
Nov 2009301550
Dec 200915870
Jan 2010241080
Feb 20109940
Mar 2010141880
Apr 2010171530
May 2010321280
Jun 201050990
Jul 2010121130
Aug 2010121300
Sep 2010211180
Oct 2010231390
Nov 2010101180
Dec 201010620
Jan 2011581450
Feb 2011321360
Mar 201135860
Apr 2011881190
May 201161590
Jun 201153510
Jul 201155400
Aug 201149340
Sep 201154380
Oct 201169980
Nov 201120900
Dec 201101100
Jan 201201570
Feb 201201020
Mar 201201240
Apr 201201590
May 2012381070
Jun 201227830
Jul 201231300
Aug 2012121240
Sep 201221010
Oct 201201810
Nov 201202120
Dec 20120860
Jan 201301140
Feb 20130750
Mar 20130930
Apr 201301630
May 201333040
Jun 201321510
Jul 201311320
Aug 201391650
Sep 201311420
Oct 201311770
Nov 201331990
Dec 201302430
Jan 201401880
Feb 201412010
Mar 201402190
Apr 201402640
May 201402270
Jun 201402170
Jul 201402592
Aug 201401641
Sep 201402140
Oct 20141820
Nov 201461380
Dec 201492000
Jan 201561680
Feb 201521180
Mar 201561670
Apr 201521290
May 201511180
Jun 20152880
Jul 2015201140
Aug 20150880
Sep 201541280
Oct 201531440
Nov 2015141530
Dec 2015121500
Jan 201681490
Feb 2016191740
Mar 201651680
Apr 201621560
May 201661940
Jun 201651240
Jul 201642890
Aug 201661610
Sep 2016101480
Oct 201632340
Nov 201651800
Dec 2016726069
Jan 201721160
Feb 201711060
Mar 201701640
Apr 201701570
May 201701580
Jun 201701220
Jul 201701210
Aug 201701500
Sep 201702020
Oct 201701990
Nov 201701830
Dec 201701520
Jan 201801640
Feb 201811210
Mar 201811140
Apr 201801120
May 201831150
Jun 201811330
Jul 20182970
Aug 20180890
Sep 201811060
Oct 201811660
Nov 201841560
Dec 201822630
Jan 201942950
Feb 201922130
Mar 201931880
Apr 201931600
May 201921720
Jun 201921160
Jul 201901180
Aug 201914110
Sep 201922420
Oct 201911250
Nov 201921330
Dec 201901090
Jan 202021490
Feb 202041770
Mar 202031690
Apr 2020010
Total40342674274