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Editorials

Data dredging, bias, or confounding

BMJ 2002; 325 doi: https://doi.org/10.1136/bmj.325.7378.1437 (Published 21 December 2002) Cite this as: BMJ 2002;325:1437

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 August 2020

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AbstractFullPdf
Jul 200319386
Aug 20030140153
Sep 2003011889
Oct 20030155107
Nov 2003411176
Dec 20030101170
Jan 2004015399
Feb 20040129101
Mar 2004012285
Apr 2004011466
May 20040124107
Jun 2004010271
Jul 2004015572
Aug 2004014581
Sep 2004310365
Oct 20044135133
Nov 20047126101
Dec 200421160136
Jan 20051411160
Feb 200579068
Mar 200569765
Apr 2005615267
May 200556252
Jun 200585333
Jul 200517046
Aug 200557437
Sep 2005513248
Oct 200569344
Nov 2005712073
Dec 200537247
Jan 200648839
Feb 200668446
Mar 200679639
Apr 20061312755
May 2006714158
Jun 200625327
Jul 2006139853
Aug 20061910439
Sep 2006813552
Oct 2006510262
Nov 2006119556
Dec 200696227
Jan 200757354
Feb 200765534
Mar 200767145
Apr 200727536
May 200767942
Jun 200746545
Jul 200745372
Aug 200778633
Sep 200786234
Oct 200799753
Nov 200799335
Dec 200725113
Jan 200837939
Feb 200809431
Mar 200817023
Apr 200849333
May 2008815128
Jun 20081311832
Jul 200826999
Aug 20081010738
Sep 20081712825
Oct 2008167624
Nov 20081611738
Dec 2008227918
Jan 2009454730
Feb 2009815017
Mar 2009573524
Apr 2009573217
May 2009503620
Jun 2009363211
Jul 20093446101
Aug 2009642317
Sep 2009363427
Oct 2009344521
Nov 2009938069
Dec 2009532917
Jan 2010433316
Feb 2010555118
Mar 2010458543
Apr 2010415225
May 2010583819
Jun 2010291913
Jul 2010324223
Aug 20106848101
Sep 201087369
Oct 20101023420
Nov 2010935029
Dec 2010622629
Jan 2011724513
Feb 2011672619
Mar 20111433823
Apr 20111312919
May 2011543417
Jun 2011504019
Jul 2011532922
Aug 2011213490
Sep 2011193718
Oct 2011255438
Nov 20111111735
Dec 201108516
Jan 2012804322
Feb 2012357740
Mar 2012434616
Apr 201264279
May 201239186
Jun 20122092
Jul 201228229
Aug 2012436745
Sep 201232175
Oct 2012402910
Nov 2012345212
Dec 2012112812
Jan 201320268
Feb 201328182
Mar 201320116
Apr 201328244
May 201341229
Jun 201351238
Jul 201334133
Aug 2013247857
Sep 201340217
Oct 2013543914
Nov 20131053711
Dec 20131653112
Jan 201485238
Feb 201457234
Mar 201464349
Apr 2014125195
May 201441176
Jun 201455161
Jul 2014110615
Aug 2014932649
Sep 2014431310
Oct 20142773
Nov 201461135
Dec 201441185
Jan 201559296
Feb 201539175
Mar 201560254
Apr 201542244
May 201542506
Jun 201557286
Jul 201542183
Aug 20151245161
Sep 201543173
Oct 201552223
Nov 201557289
Dec 201572176
Jan 201660279
Feb 201685268
Mar 201671255
Apr 201675172
May 2016923410
Jun 2016153276
Jul 2016118276
Aug 20161004745
Sep 2016944115
Oct 2016109459
Nov 2016865910
Dec 201661404
Jan 2017882211
Feb 20171132913
Mar 201770155
Apr 201768214
May 201769114
Jun 2017931710
Jul 201774125
Aug 20171082516
Sep 201765253
Oct 2017792010
Nov 201788245
Dec 20179252
Jan 201897189
Feb 201870173
Mar 201883284
Apr 201876164
May 20185383
Jun 201860124
Jul 201861103
Aug 20184971
Sep 2018631313
Oct 201876134
Nov 201857246
Dec 201881125
Jan 201956107
Feb 201964197
Mar 201984262
Apr 201970227
May 201979365
Jun 201980129
Jul 201948164
Aug 201975234
Sep 2019673610
Oct 201992172
Nov 201988245
Dec 20198382
Jan 202045248
Feb 202060197
Mar 202084139
Apr 2020178297
May 2020216379
Jun 202051101
Jul 20201121911
Aug 20201710
Total9445108485917