Intended for healthcare professionals

Education And Debate

Reader's guide to critical appraisal of cohort studies: 2. Assessing potential for confounding

BMJ 2005; 330 doi: https://doi.org/10.1136/bmj.330.7497.960 (Published 21 April 2005) Cite this as: BMJ 2005;330:960

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: April 2005 to July 2019

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AbstractFullPdf
Apr 200526929903260
May 2005170933709
Jun 200557275200
Jul 200545164144
Aug 200528119130
Sep 2005338696
Oct 200553120150
Nov 200552174109
Dec 2005508774
Jan 2006444071
Feb 2006425173
Mar 20065685145
Apr 2006456090
May 20062396121
Jun 20062010387
Jul 2006197371
Aug 2006329776
Sep 200613101147
Oct 200627148145
Nov 20062315098
Dec 2006179468
Jan 200730135115
Feb 200725147120
Mar 200735176181
Apr 200724152125
May 20072716696
Jun 20071911696
Jul 20071711293
Aug 20072110990
Sep 2007147139145
Oct 200774178102
Nov 200743197104
Dec 2007499176
Jan 200822161167
Feb 200827147119
Mar 200839183173
Apr 200841180113
May 20083411877
Jun 2008278279
Jul 2008407672
Aug 2008367773
Sep 20083395124
Oct 200854192119
Nov 200862206158
Dec 2008239562
Jan 20094388134
Feb 2009577781
Mar 200985115117
Apr 2009778394
May 2009848588
Jun 2009626352
Jul 2009665373
Aug 20098256108
Sep 200910872112
Oct 2009949298
Nov 2009106129115
Dec 2009928086
Jan 20109562104
Feb 2010884469
Mar 2010957789
Apr 2010766593
May 2010596980
Jun 2010525073
Jul 2010544248
Aug 2010594451
Sep 20101045887
Oct 20101326667
Nov 2010785868
Dec 2010793556
Jan 2011684872
Feb 2011554075
Mar 20111275392
Apr 2011874959
May 2011746288
Jun 2011523353
Jul 2011505762
Aug 2011506864
Sep 2011448274
Oct 20117810195
Nov 2011199056
Dec 2011017649
Jan 201210212074
Feb 2012488652
Mar 20125310355
Apr 20121059649
May 2012564733
Jun 2012433824
Jul 2012464621
Aug 2012695728
Sep 20128212687
Oct 20124816677
Nov 20128011952
Dec 2012385410
Jan 2013276435
Feb 2013244521
Mar 2013266218
Apr 2013735421
May 2013929936
Jun 2013818138
Jul 2013426628
Aug 2013616934
Sep 20136411860
Oct 20137111546
Nov 201310812064
Dec 2013867631
Jan 20141029640
Feb 2014629544
Mar 20147910543
Apr 2014777243
May 2014736624
Jun 2014677933
Jul 2014311347
Aug 2014774228
Sep 2014653765
Oct 2014312217
Nov 2014604924
Dec 20141394525
Jan 20151307136
Feb 2015748141
Mar 20151167747
Apr 20151166840
May 20151037051
Jun 2015622818
Jul 2015462625
Aug 2015672521
Sep 2015874854
Oct 2015825820
Nov 20151267128
Dec 20151335116
Jan 20161176419
Feb 20161077822
Mar 20161084316
Apr 2016945029
May 20161293514
Jun 2016775119
Jul 2016632412
Aug 2016843422
Sep 20161215669
Oct 20161326330
Nov 20161085525
Dec 2016963312
Jan 20171007337
Feb 2017995532
Mar 20171346134
Apr 2017785024
May 2017723221
Jun 2017703216
Jul 2017464920
Aug 20171143212
Sep 20171514220
Oct 20171735528
Nov 20171717224
Dec 20171896227
Jan 20181216431
Feb 20181368650
Mar 20181425529
Apr 20181306630
May 20181415426
Jun 2018842410
Jul 2018903510
Aug 20181043518
Sep 2018883416
Oct 20181556135
Nov 20181275221
Dec 20181184926
Jan 20191025917
Feb 2019833012
Mar 20191516529
Apr 20191797439
May 20191154424
Jun 2019853616
Jul 201964495
Total130481759314477