Case–control or cohort study? | British Journal of Ophthalmology

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PostScript

Letter

Case–control or cohort study?

Online download statistics by month:

Online download statistics by month: March 2011 to March 2024

	Abstract	Full	Pdf
Mar 2011	5	4	18
Apr 2011	6	1	10
May 2011	21	1	4
Jun 2011	33	1	1
Jul 2011	70	8	27
Aug 2011	23	7	16
Sep 2011	7	1	8
Oct 2011	7	1	5
Nov 2011	21	2	3
Dec 2011	33	6	3
Jan 2012	12	3	2
Feb 2012	11	2	7
Mar 2012	14	3	1
Apr 2012	10	3	3
May 2012	13	2	1
Jun 2012	7	0	0
Jul 2012	11	3	2
Aug 2012	7	0	0
Sep 2012	8	5	2
Oct 2012	8	30	1
Nov 2012	0	1	2
Dec 2012	0	0	1
Jan 2013	0	2	1
Feb 2013	0	1	3
Apr 2013	0	0	1
May 2013	0	2	1
Jun 2013	13	0	0
Jul 2013	5	2	0
Aug 2013	3	4	0
Sep 2013	4	30	0
Oct 2013	4	34	1
Nov 2013	7	0	2
Dec 2013	4	1	0
Jan 2014	8	0	0
Feb 2014	1	0	1
Mar 2014	7	0	0
Apr 2014	8	0	1
May 2014	12	2	1
Jul 2014	4	1	2
Aug 2014	3	1	1
Sep 2014	4	3	1
Nov 2014	3	1	1
Dec 2014	4	1	0
Jan 2015	3	0	1
Mar 2015	1	0	0
Apr 2015	4	0	0
May 2015	5	0	1
Jun 2015	0	0	2
Jul 2015	2	1	0
Aug 2015	6	0	0
Nov 2015	3	0	0
Dec 2015	6	0	1
Jan 2016	4	0	0
Feb 2016	0	1	0
Mar 2016	1	1	0
Apr 2016	4	1	0
Jun 2016	3	0	0
Jul 2016	7	0	0
Aug 2016	7	0	0
Sep 2016	12	0	0
Oct 2016	10	1	1
Nov 2016	7	0	0
Dec 2016	9	0	0
Jan 2017	5	0	0
Feb 2017	10	2	0
Mar 2017	9	0	0
Apr 2017	11	0	0
May 2017	7	1	1
Jun 2017	7	1	0
Jul 2017	19	0	0
Aug 2017	20	3	1
Sep 2017	113	1	0
Oct 2017	238	0	0
Nov 2017	120	10	1
Dec 2017	70	18	0
Jan 2018	42	13	0
Feb 2018	56	11	0
Mar 2018	33	11	1
Apr 2018	28	10	0
May 2018	20	8	0
Jun 2018	43	12	0
Jul 2018	19	13	0
Aug 2018	30	14	0
Sep 2018	20	14	0
Oct 2018	27	7	0
Nov 2018	22	8	0
Dec 2018	20	9	0
Jan 2019	32	8	0
Feb 2019	23	9	0
Mar 2019	8	0	0
Apr 2019	6	0	0
May 2019	21	5	1
Jun 2019	19	11	1
Jul 2019	15	9	0
Aug 2019	17	9	0
Sep 2019	16	10	1
Oct 2019	33	8	0
Nov 2019	10	8	0
Dec 2019	15	11	1
Jan 2020	16	8	0
Feb 2020	20	9	0
Mar 2020	13	9	0
Apr 2020	14	10	0
May 2020	23	11	0
Jun 2020	29	14	1
Jul 2020	20	8	0
Aug 2020	13	7	0
Sep 2020	52	14	2
Oct 2020	23	8	0
Nov 2020	13	0	0
Dec 2020	32	0	0
Jan 2021	21	0	0
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Mar 2021	6	0	0
Apr 2021	9	0	0
May 2021	2	0	0
Jul 2021	1	1	0
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Sep 2021	1	1	0
Oct 2021	11	0	0
Nov 2021	16	0	0
Dec 2021	14	0	2
Jan 2022	24	4	0
Feb 2022	14	0	0
Mar 2022	20	0	0
Apr 2022	12	2	1
May 2022	36	0	0
Jun 2022	42	1	0
Jul 2022	24	1	0
Aug 2022	42	0	0
Sep 2022	28	1	1
Oct 2022	52	1	0
Nov 2022	20	0	0
Dec 2022	14	2	0
Jan 2023	22	1	1
Feb 2023	48	0	0
Mar 2023	6	0	0
Apr 2023	1	0	0
May 2023	16	0	0
Jun 2023	10	0	0
Jul 2023	10	0	0
Aug 2023	2	0	0
Sep 2023	2	0	0
Oct 2023	20	0	0
Nov 2023	22	0	0
Dec 2023	29	1	0
Jan 2024	17	0	0
Feb 2024	6	0	0
Mar 2024	20	0	0
Total	2644	542	156