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Research Methods & Reporting Statistics Notes

Brackets (parentheses) in formulas

BMJ 2011; 343 doi: https://doi.org/10.1136/bmj.d570 (Published 11 August 2011) Cite this as: BMJ 2011;343:d570

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 2018 to April 2024

Rendering graph...
AbstractFullPdf
Jan 201808924
Feb 201817413
Mar 201818613
Apr 2018010217
May 201801029
Jun 201809432
Jul 201815613
Aug 201808012
Sep 20180509
Oct 20180509
Nov 20181718
Dec 201828415
Jan 201939318
Feb 201917522
Mar 201905622
Apr 201906428
May 201924618
Jun 20191457
Jul 201903416
Aug 201915415
Oct 201913820
Nov 201914011
Dec 201913413
Jan 202024517
Feb 202021049
Mar 202013613
May 2020513937
Jun 202005512
Jul 2020215917
Aug 20205807
Sep 202024113
Oct 202003211
Nov 202035615
Dec 202014714
Jan 202122513
Feb 202102716
Mar 202106013
Apr 202114413
May 202114113
Jun 202107829
Jul 202114010
Aug 202113810
Sep 202105022
Oct 202113632
Nov 202102033
Dec 20210508
Jan 202203914
Feb 202204717
Mar 202203616
Apr 202245612
May 202202819
Jun 202203018
Jul 202234513
Aug 20220224
Sep 202213014
Oct 202203218
Nov 202204627
Dec 202203721
Jan 20231369
Feb 20232307
Mar 20231257
Apr 202302315
May 202312714
Jun 202312115
Jul 202302516
Aug 202301613
Sep 202302315
Oct 202302315
Nov 20230359
Dec 202324611
Jan 202437412
Feb 20243549
Mar 202414875
Apr 20240208
Total7037941184
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