Practice Statistics Notes

Missing data

BMJ 2007; 334 doi: https://doi.org/10.1136/bmj.38977.682025.2C (Published 22 February 2007) Cite this as: BMJ 2007;334:424

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.

AbstractFullPDF
October 201704722
September 201707443
August 2017012662
July 201706433
June 2017010346
May 2017011051
April 2017016877
March 2017114751
February 201708649
January 201718431
December 201618734
November 2016310846
October 2016111540
September 2016410541
August 2016014272
July 201619346
June 201618157
May 201607541
April 201638044
March 201607438
February 2016013149
January 2016011334
December 2015011741
November 2015017453
October 2015013437
September 2015013362
August 201505445
July 201506445
June 201506644
May 2015010679
April 201509273
March 201509583
February 20150184129
January 2015010054
December 2014011160
November 2014010754
October 201403117
September 201407525
August 2014207244
July 2014010349
June 2014467826
May 2014515516
April 2014918632
March 2014678630
February 2014938234
January 2014528025
December 2013747533
November 20136210230
October 2013586725
September 2013627331
August 2013555723
July 2013397534
June 2013808830
May 2013659336
April 2013478122
March 2013386411
February 2013154414
January 201344399
December 2012333818
November 2012557133
October 2012737542
September 2012375729
August 20122010743
July 2012346322
June 2012265221
May 2012295423
April 2012585727
March 20126910956
February 2012736534
January 2012846834
December 2011794924
November 2011526037
October 2011495233
September 2011495232
August 2011398154
July 2011156945
June 2011257357
May 2011296141
April 2011317746
March 20112710555
February 2011167343
January 2011239250
December 2010149947
November 2010158735
October 2010237256
September 2010143741
August 2010293938
July 2010222721
June 2010444353
May 2010284038
April 2010383632
March 2010194750
February 2010153937
January 2010113435
December 2009193933
November 2009314852
October 2009519686
September 2009467760
August 2009275340
July 2009263540
June 2009355044
May 2009432935
April 2009536555
March 2009516644
February 2009627956
January 2009809364
December 20082013872
November 20082721777
October 20082921369
September 200824279112
August 20081417992
July 20081217493
June 20082323685
May 200815237100
April 20082015056
March 2008811385
February 2008158451
January 2008164733
December 2007195533
November 2007225850
October 2007357057
September 2007236252
August 2007255446
July 2007237040
June 2007186554
May 2007207464
April 20073410296
March 200774530344
February 20072191364767