Intended for healthcare professionals

Editor's Choice

Critical thinking

BMJ 2009; 338 doi: https://doi.org/10.1136/bmj.b1662 (Published 23 April 2009) Cite this as: BMJ 2009;338:b1662

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 2009 to November 2019

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AbstractFullPdf
Apr 2009123613950
May 20096904700
Jun 200960760
Jul 200929580
Aug 200933430
Sep 200919390
Oct 20099250
Nov 200913270
Dec 20097130
Jan 201012250
Feb 20106140
Mar 201010160
Apr 20109110
May 201014210
Jun 201015120
Jul 20101980
Aug 20102180
Sep 20101183
Oct 201013143
Nov 20101290
Dec 20108110
Jan 201115110
Feb 20117100
Mar 201115130
Apr 201115130
May 20111180
Jun 2011950
Jul 20113150
Aug 20111350
Sep 201131140
Oct 20111960
Nov 2011680
Dec 20110180
Jan 2012460
Feb 2012540
Mar 20121610
Apr 20121310
May 20121170
Jun 2012630
Jul 2012360
Aug 2012450
Sep 20122100
Oct 2012060
Nov 20120140
Dec 2012040
Jan 2013030
Feb 2013080
Mar 2013020
Apr 2013070
May 2013080
Jun 20130100
Jul 20130130
Aug 2013290
Sep 2013090
Oct 2013070
Nov 2013090
Dec 2013040
Jan 2014040
Feb 20140110
Mar 2014070
Apr 20140120
May 2014080
Jun 2014060
Jul 20140140
Aug 2014020
Sep 20140130
Oct 2014030
Nov 2014030
Dec 2014010
Jan 20150100
Feb 2015010
Mar 2015030
Apr 2015060
May 2015030
Jun 2015021
Jul 2015070
Aug 2015080
Sep 20150180
Oct 20150380
Nov 20150320
Dec 20150290
Jan 2016070
Feb 20160120
Mar 20160140
Apr 20160100
May 20160210
Jun 20161150
Jul 2016061
Aug 2016030
Sep 20160110
Oct 20160100
Nov 20160110
Dec 2016050
Jan 20170150
Feb 20170190
Mar 20170110
Apr 20170110
May 20170240
Jun 20170110
Jul 20170160
Aug 20170210
Sep 20170130
Oct 20170150
Nov 2017090
Dec 20170120
Jan 20180250
Feb 20181100
Mar 20180150
Apr 2018190
May 20181170
Jun 20183130
Jul 2018050
Aug 20181100
Sep 20180160
Oct 20182100
Nov 2018090
Dec 2018050
Jan 20191250
Feb 2019090
Mar 20190100
Apr 2019090
May 20192200
Jun 20190190
Jul 20190120
Aug 20190140
Sep 20193210
Oct 20192130
Nov 2019010
Total250234158