Stratification for exploring heterogeneity in systematic reviews

Derrick A Bennett; Jonathan R Emberson

doi:10.1136/ebm.14.6.162-a

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Stratification for exploring heterogeneity in systematic reviews

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	Abstract	Full	Pdf
Nov 2009	4	11	8
Dec 2009	134	199	77
Jan 2010	193	232	44
Feb 2010	51	188	35
Mar 2010	16	62	35
Apr 2010	18	24	27
May 2010	18	5	12
Jun 2010	15	10	10
Jul 2010	13	11	9
Aug 2010	17	25	16
Sep 2010	8	10	3
Oct 2010	10	7	5
Nov 2010	13	12	9
Dec 2010	12	6	6
Jan 2011	18	6	5
Feb 2011	21	3	7
Mar 2011	15	31	14
Apr 2011	10	15	3
May 2011	38	8	8
Jun 2011	23	6	11
Jul 2011	25	4	6
Aug 2011	53	7	21
Sep 2011	13	3	6
Oct 2011	23	5	9
Nov 2011	36	6	4
Dec 2011	32	11	5
Jan 2012	26	4	7
Feb 2012	32	10	13
Mar 2012	43	7	23
Apr 2012	21	6	12
May 2012	10	3	5
Jun 2012	9	2	2
Jul 2012	8	3	2
Aug 2012	9	3	5
Sep 2012	8	3	6
Oct 2012	13	0	1
Nov 2012	0	1	4
Dec 2012	0	3	4
Jan 2013	0	0	2
Feb 2013	0	1	9
Mar 2013	0	2	11
Apr 2013	0	8	7
May 2013	0	1	1
Jun 2013	7	4	2
Jul 2013	2	1	0
Sep 2013	4	2	2
Nov 2013	1	0	0
Dec 2013	2	0	0
Jan 2014	1	0	2
Feb 2014	7	1	6
Mar 2014	25	10	15
Apr 2014	27	2	8
May 2014	12	1	1
Jun 2014	6	2	1
Jul 2014	8	0	2
Aug 2014	2	0	1
Sep 2014	10	0	2
Oct 2014	4	0	1
Nov 2014	5	0	0
Dec 2014	5	0	0
Jan 2015	7	0	0
Feb 2015	14	3	10
Mar 2015	25	0	15
Apr 2015	7	5	3
May 2015	12	0	1
Jun 2015	14	0	1
Jul 2015	5	0	0
Aug 2015	9	0	0
Sep 2015	8	0	0
Oct 2015	3	0	0
Nov 2015	3	0	0
Dec 2015	18	0	0
Jan 2016	9	2	2
Feb 2016	14	1	10
Mar 2016	6	1	3
Apr 2016	11	2	1
May 2016	17	0	0
Jun 2016	1	1	0
Aug 2016	4	0	0
Sep 2016	1	0	0
Oct 2016	14	0	1
Nov 2016	22	0	0
Dec 2016	9	0	0
Jan 2017	16	0	1
Feb 2017	15	5	10
Mar 2017	20	11	8
Apr 2017	23	1	1
May 2017	7	4	0
Jun 2017	18	3	2
Jul 2017	25	5	1
Aug 2017	27	1	1
Sep 2017	27	3	3
Oct 2017	29	1	1
Nov 2017	26	0	0
Dec 2017	27	0	0
Jan 2018	13	2	0
Feb 2018	37	19	17
Mar 2018	36	10	8
Apr 2018	30	5	0
May 2018	29	2	2
Jun 2018	20	1	1
Jul 2018	21	1	0
Aug 2018	17	1	0
Sep 2018	13	2	1
Oct 2018	41	1	0
Nov 2018	41	3	1
Dec 2018	36	1	0
Jan 2019	59	4	1
Feb 2019	42	6	3
Mar 2019	36	9	2
Apr 2019	25	4	2
May 2019	19	4	0
Jun 2019	13	1	1
Jul 2019	34	10	8
Aug 2019	59	17	10
Sep 2019	48	9	4
Oct 2019	16	0	0
Nov 2019	28	5	1
Dec 2019	22	3	0
Jan 2020	49	3	0
Feb 2020	82	8	9
Mar 2020	38	7	3
Apr 2020	34	8	6
May 2020	17	1	0
Jun 2020	25	4	2
Jul 2020	26	6	5
Aug 2020	37	9	3
Sep 2020	36	4	1
Oct 2020	38	3	1
Nov 2020	29	3	1
Dec 2020	29	1	1
Jan 2021	40	2	2
Feb 2021	38	2	4
Mar 2021	73	6	5
Apr 2021	23	5	5
May 2021	23	4	3
Jun 2021	1	1	0
Jul 2021	8	7	8
Aug 2021	8	7	5
Sep 2021	4	4	2
Oct 2021	53	2	1
Nov 2021	17	1	2
Dec 2021	26	0	0
Jan 2022	31	3	0
Feb 2022	45	3	2
Mar 2022	81	10	7
Apr 2022	30	0	0
May 2022	58	4	0
Jun 2022	79	2	0
Jul 2022	68	2	2
Aug 2022	71	7	6
Sep 2022	51	5	2
Oct 2022	136	2	1
Nov 2022	114	5	1
Dec 2022	27	0	0
Jan 2023	8	0	0
Feb 2023	72	8	6
Total	3989	1305	785

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