Intended for healthcare professionals

Education And Debate Statistics Notes

Standard deviations and standard errors

BMJ 2005; 331 doi: https://doi.org/10.1136/bmj.331.7521.903 (Published 13 October 2005) Cite this as: BMJ 2005;331:903

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: October 2005 to July 2018

Rendering graph...
AbstractFullPdf
Oct 200552651642936
Nov 2005320967472
Dec 200593504198
Jan 200698200223
Feb 2006120147165
Mar 2006151179204
Apr 2006176155127
May 200679120139
Jun 2006888796
Jul 200675121120
Aug 20065395125
Sep 2006123105111
Oct 200677291254
Nov 200633228227
Dec 200621172192
Jan 200724240287
Feb 200723265260
Mar 200722283175
Apr 200725223131
May 200719213129
Jun 200720173110
Jul 200714244107
Aug 200781022155
Sep 200791543189
Oct 2007222279222
Nov 2007242379248
Dec 200791633146
Jan 2008131833211
Feb 2008112266207
Mar 200892534244
Apr 2008112047159
May 2008172096218
Jun 200891985178
Jul 2008201753159
Aug 2008171484196
Sep 2008182691205
Oct 2008312986198
Nov 2008233623313
Dec 2008202989333
Jan 200916371544215
Feb 200922451699260
Mar 200923752024200
Apr 200921881337233
May 200914521024165
Jun 200913521062159
Jul 20091352814168
Aug 20091611890138
Sep 200922591230173
Oct 200927481683205
Nov 200927581789199
Dec 200921391170130
Jan 201022791276182
Feb 201026671543186
Mar 201033081863216
Apr 201027581405191
May 201025291429183
Jun 201019141148176
Jul 201019251105170
Aug 201017911060137
Sep 201036101235189
Oct 201044941176195
Nov 201038811243213
Dec 20102804807112
Jan 20113249895156
Feb 201138361409196
Mar 201140671221170
Apr 20112579741131
May 20112197756128
Jun 20111900728131
Jul 2011962875123
Aug 20111151572169
Sep 20111182046184
Oct 20111234295266
Nov 2011434122288
Dec 201104325277
Jan 201233131960246
Feb 201234031539196
Mar 201225121192183
Apr 201230351405170
May 201221761270138
Jun 201231768096
Jul 2012456643118
Aug 2012559612121
Sep 201277856495
Oct 20121530829118
Nov 20121752861101
Dec 201284940551
Jan 201396445742
Feb 2013116560060
Mar 2013126460055
Apr 2013126459172
May 2013126062881
Jun 2013126354080
Jul 20131308716100
Aug 2013109153372
Sep 2013130348779
Oct 2013177780898
Nov 20131912978105
Dec 2013149163274
Jan 2014157666193
Feb 20141906886108
Mar 201424141094123
Apr 2014137356284
May 201494245049
Jun 201466238457
Jul 201413504101
Aug 20149440489
Sep 20140536146
Oct 2014035869
Nov 2014069777
Dec 2014051887
Jan 20150739161
Feb 20150620187
Mar 20150822315
Apr 20150717232
May 20151583126
Jun 20150369121
Jul 2015030275
Aug 20150433108
Sep 20150666237
Oct 2015070969
Nov 20151708100
Dec 2015045778
Jan 2016066189
Feb 2016056397
Mar 20161484101
Apr 2016239592
May 20160450106
Jun 2016543184
Jul 2016148868
Aug 2016251480
Sep 20162523103
Oct 20160690118
Nov 20160694105
Dec 2016147969
Jan 20175921123
Feb 20176748102
Mar 20172810129
Apr 20172525114
May 20170586124
Jun 20171482101
Jul 2017042599
Aug 20170561112
Sep 20170538104
Oct 20170622120
Nov 20170592118
Dec 2017044165
Jan 2018075493
Feb 201810522161
Mar 20182674250
Apr 20180472343
May 20180372307
Jun 20180447224
Jul 2018022475
Total12548215265726302