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Editorials

Choosing the best research design for each question

BMJ 1997; 315 doi: https://doi.org/10.1136/bmj.315.7123.1636 (Published 20 December 1997) Cite this as: BMJ 1997;315:1636

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 June 2021

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AbstractFullPdf
Jul 20030630
Aug 20030510
Sep 20030850
Oct 200301400
Nov 200311980
Dec 200301200
Jan 200402900
Feb 200401662
Mar 200411420
Apr 200431310
May 200411450
Jun 2004101550
Jul 200482260
Aug 200421620
Sep 2004141770
Oct 2004102050
Nov 2004222700
Dec 2004402300
Jan 2005352110
Feb 2005242300
Mar 2005242260
Apr 2005172760
May 2005112360
Jun 2005211630
Jul 2005152040
Aug 2005201870
Sep 2005352590
Oct 2005322930
Nov 2005283511
Dec 2005222540
Jan 2006212210
Feb 2006152150
Mar 2006182090
Apr 2006181960
May 2006171630
Jun 2006111090
Jul 2006121350
Aug 200641160
Sep 2006151690
Oct 200682340
Nov 2006142100
Dec 2006101280
Jan 2007222020
Feb 2007141640
Mar 2007181930
Apr 2007201540
May 2007191620
Jun 200781310
Jul 2007201140
Aug 200791460
Sep 2007111860
Oct 2007182360
Nov 2007271860
Dec 2007391340
Jan 2008711570
Feb 2008362050
Mar 2008622040
Apr 2008471660
May 200881600
Jun 200851970
Jul 200891550
Aug 2008151100
Sep 2008501531
Oct 2008442520
Nov 2008612710
Dec 2008541331
Jan 20091111140
Feb 2009117840
Mar 20091501540
Apr 2009141950
May 2009129870
Jun 200995860
Jul 2009114700
Aug 200988510
Sep 2009108600
Oct 2009138870
Nov 20091351100
Dec 20091081010
Jan 20101131190
Feb 20101361110
Mar 20101551710
Apr 2010158970
May 20101541060
Jun 2010127920
Jul 2010133950
Aug 2010141990
Sep 20102511100
Oct 20102691090
Nov 20102911370
Dec 2010235780
Jan 20112641330
Feb 2011257870
Mar 20113331250
Apr 2011250990
May 2011226720
Jun 2011142410
Jul 2011151990
Aug 20111021520
Sep 2011931660
Oct 20111133170
Nov 2011492470
Dec 201102420
Jan 20121841230
Feb 2012201960
Mar 20121891080
Apr 2012183700
May 201287490
Jun 201247970
Jul 201222550
Aug 201232520
Sep 201270340
Oct 2012161880
Nov 2012223860
Dec 2012100390
Jan 2013104470
Feb 201397390
Mar 2013108520
Apr 2013101370
May 2013117450
Jun 201381350
Jul 201358390
Aug 201365230
Sep 201392300
Oct 2013135900
Nov 2013144910
Dec 201387440
Jan 201487370
Feb 2014111250
Mar 2014146420
Apr 2014107320
May 201490300
Jun 201494320
Jul 20142860
Aug 20146080
Sep 201449290
Oct 201425110
Nov 201449190
Dec 201471480
Jan 201578470
Feb 201591410
Mar 2015140514
Apr 2015136510
May 2015247193
Jun 2015574936
Jul 20154372
Aug 201551178
Sep 2015124140
Oct 2015311610
Nov 2015332270
Dec 2015160230
Jan 2016121450
Feb 2016996343
Mar 2016889271
Apr 2016123370
May 2016673720
Jun 20163980
Jul 201628140
Aug 2016383113
Sep 201662330
Oct 201657230
Nov 201652160
Dec 201630210
Jan 201758200
Feb 201753260
Mar 201768450
Apr 201760180
May 201746110
Jun 201748200
Jul 201733110
Aug 20175860
Sep 201780230
Oct 201778370
Nov 201756250
Dec 201755200
Jan 201882370
Feb 201838160
Mar 201850390
Apr 201854240
May 201862250
Jun 201872350
Jul 201868260
Aug 201866160
Sep 201861310
Oct 201861600
Nov 201880230
Dec 201868210
Jan 201966420
Feb 201971210
Mar 2019121390
Apr 2019133260
May 2019143330
Jun 201975130
Jul 201986430
Aug 201978340
Sep 201985320
Oct 201974310
Nov 2019101520
Dec 2019106380
Jan 2020100360
Feb 2020108370
Mar 202096350
Apr 2020136300
May 2020173330
Jun 2020162130
Jul 2020120410
Aug 2020114250
Sep 2020193290
Oct 2020146390
Nov 2020132420
Dec 2020194470
Jan 2021189490
Feb 2021159220
Mar 2021186560
Apr 2021128590
May 2021199480
Jun 202173100
Total1817820690205