Table 2: Key Indicators for BMJ research papers published 2004 - 2012 (excluding the Christmas issues)
2004 (n=264)
2005 (n=266)
2006 (n=198)
2007 (n=147)
2008 (n=187)
2009 (n=246)
2010 (n=228)
2011 (n=212)
2012 (n=252)
Number (% of all papers) with corresponding author from UK
141 (53)
143 (54)
94 (48)
96 (65)
83 (44)
115 (47)
91 (40)
90 (43)
99 (39)
Number (% of all papers) with corresponding author from
Europe, excl. UK
Number (% of all papers) with corresponding author from North
America
Number (% of all papers) with corresponding author from
Australia/New Zealand
Number (% of all papers) with corresponding author from the
rest of the world
Study design
44 (17)
64 (24)
48 (24)
15 (10)
43 (23)
63 (26)
64 (28)
46 (22)
82 (33)
40 (15)
34 (13)
27 (14)
17 (12)
33 (18)
48 (20)
43 (19)
50 (24)
53 (21)
22 (8)
18 (7)
17 (9)
9 (6)
16 (9)
13 (5)
19 (8)
16 (8)
11 (4)
17 (6)
7 (3)
12 (6)
10 (7)
12 (6)
7 (3)
11 (5)
10 (5)
7 (3)
RCTs (% of all papers)
52 (20)
49 (18)
58 (29)
45 (31)
44 (24)
51 (21)
53 (23)
42 (20)
43 (17)
Systematic review or meta-analysis (% of all papers)
36 (14)
32 (12)
26 (13)
33 (22)
27 (14)
37 (15)
38 (17)
43 (20)
55 (22)
Median (IQR) interval in days between acceptance & online
publication
Total Accesses
-
44 (34, 59)
50 (39, 69)
46 (36, 56)
61 (42, 71)
106 (86, 126)
74 (63, 89)
62 (52, 73)
44 (33, 66)
Median (IQR) total accesses in first 3 months of publication
4886 (3426,
8041)
6411 (3825,
9483)
6543 (4197,
9369)
5532 (3717,
8627)
5302 (3617,
8698)
4312 (3108,
6389)
5345 (3921,
7522)
6605 (4675,
10185)
7192 (4845,
11850)
Median (IQR) number of rapid responses in first 12 month of
publication
Picked up by secondary source
-
3 (1, 7)
4 (2, 7)
3 (1, 6)
2 (1, 5)
2 (1, 5)
2 (1, 4)
2 (1, 4)
-
Picked up in Journal Watch General Medicine (% of all papers)
-
69 (26)
53 (27)
38 (26)
42 (23)
33 (13)
44 (19)
63 (30)
81 (32)
Picked up in BMJ Updates (% of all papers)
-
84 (32)
69 (35)
83 (57)
65 (35)
86 (35)
81 (36)
72 (34)
87 (35)
Picked up in ACP Journal Club (% of all papers)
-
8 (3)
6 (3)
11 (8)
†
†
†
†
†
Abstracted or noted in Evidence Based Medicine Journal (% of all
papers)
Abstracted in Evidence Based Nursing Journal (% of all papers)
-
15 (6)
15 (8)
25 (17)
23 (12)
23 (9)
25 (11) *
26 (12)
5 (2)
-
11 (4)
10 (5)
7 (5)
6 (3)
8 (3)
9 (4)
4 (2)
2 (1)
Abstracted in Evidence Based Mental Health Journal (% of all
papers)
Listed in F1000 (% of all papers)
-
5 (2)
4 (2)
6 (4)
5 (3)
7 (3)
8 (4)
3 (1)
5 (2)
-
3 (1)
15 (8)
20 (14)
27 (14)
32 (13)
34 (15) †
†
†
International research
Turnaround times
Rapid responses
Table 2 continued
2004 (n=264)
2005 (n=266)
2006 (n=198)
2007 (n=147)
2008 (n=187)
2009 (n=246)
2010 (n=228)
2011 (n=212)
2012 (n=252)
2260
2577
2097
1496
2084
2742
2717
2752
-
Aggregate Citations
Citations to all papers in year of publication plus one calendar
year
Total number of citations to all papers
Median (IQR) number of citations
6 (3, 11)
7 (3, 11)
8 (4, 12)
7 (3, 14)
7 (3, 15)
8 (4, 14)
8 (5, 15)
10 (4, 17)
-
Mean (SD) number of citations
8.6 (9.3)
9.8 (11.9)
10.6 (12.9)
10.2 (9.9)
11.1 (13.4)
11.2 (11.9)
11.9 (12.1)
13.5 (14.6)
-
Citations to all papers in year of publication plus two calendar
years
Total number of citations to all papers
Median (IQR) number of citations
Mean (SD) number of citations
Citations to all papers in year of publication plus three
calendar years
Total number of citations to all papers
5101
4099
3215
4204
5498
5307
-
-
14 (8, 24)
14 (9, 23)
16 (8, 29)
13 (8, 28)
16 (9, 27)
17 (10, 29)
-
-
16.8 (18.0))
19.3 (20.0)
20.7 (23.7)
21.9 (20.9)
22.5 (25.7)
22.4 (24.4)
23.3 (20.5)
-
-
6855
7642
6216
4996
6382
8107
-
-
-
Median (IQR) number of citations
18 (9, 36)
20 (12, 25)
21 (14, 36)
23 (13, 45)
21 (12, 42)
23 (13, 40)
-
-
-
Mean (SD) number of citations
26.0 (27.9)
29.0 (28.5)
31.4 (34.9)
44.0 (32.8)
34.1 (38.6)
33.0 (35.7)
-
-
-
Citations to all papers in year of publication plus four calendar
years
Total number of citations to all papers
9215
10125
8210
6760
8392
-
-
-
-
Median (IQR) number of citations
24 (12, 45)
27 (15, 48)
28 (17, 51)
29 (18, 60)
27 (16, 55)
-
-
-
-
Mean (SD) number of citations
34.9 (38.3)
38.3 (36.8)
41.5 (45.1)
46 (46.6)
44.9 (50.8)
-
-
-
-
Citations to all papers in year of publication plus five calendar
years
Total number of citations to all papers
Notes:
IQR:
*
†
4443
12 (6, 22)
11523
12476
10116
8517
-
-
-
-
-
Median (IQR) number of citations
31 (15, 57)
35 (18, 57)
33 (21, 62)
36 (23, 72)
-
-
-
-
-
Mean (SD) number of citations
43.7 (49.2)
47.3 (45.7)
51.1 (54.1)
57.9 (60.6)
-
-
-
-
-
Interquartile range. SD: Standard deviation
"Other articles noted" ceased at the end of 2009
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