Intended for healthcare professionals

Endgames Statistical Question

Bias in observational study designs: case-control studies

BMJ 2015; 350 doi: https://doi.org/10.1136/bmj.h560 (Published 30 January 2015) Cite this as: BMJ 2015;350:h560

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: January 2015 to September 2019

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AbstractFullPdf
Jan 20153139841
Feb 2015898837546
Mar 201523916098
Apr 2015876854
May 2015625143
Jun 2015493546
Jul 2015613227
Aug 2015453538
Sep 2015496041
Oct 2015584216
Nov 2015554626
Dec 2015372411
Jan 2016372714
Feb 2016512814
Mar 201638104
Apr 2016472116
May 2016382517
Jun 2016251510
Jul 20163476
Aug 2016402016
Sep 2016342019
Oct 2016854916
Nov 2016302413
Dec 201636208
Jan 2017634115
Feb 2017401911
Mar 2017412314
Apr 2017642113
May 2017672615
Jun 2017302717
Jul 201724189
Aug 2017451512
Sep 2017632715
Oct 20171073414
Nov 2017942910
Dec 2017572110
Jan 201859255
Feb 2018542914
Mar 2018512210
Apr 2018462010
May 2018622410
Jun 201831144
Jul 2018373012
Aug 2018373416
Sep 2018463022
Oct 2018453621
Nov 2018463815
Dec 201840227
Jan 201931248
Feb 2019493022
Mar 2019463614
Apr 201965328
May 201958227
Jun 201957136
Jul 201953136
Aug 201928124
Sep 201933158
Total411725761524