Table 1 Distribution of abstracts by year and characteristics
2012 n = 84 | 2014 n = 59 | 2015 n = 61 | All N = 204 | |
|---|---|---|---|---|
Journals | ||||
- Annals of Internal Medicine | 12 (14.3) | 13 (22.0) | 11 (18.0) | 36 (17.6) |
- BMC Medicine | 4 (4.8) | 8 (13.6) | 10 (16.4) | 22 (10.8) |
- BMJ | 31 (36.9) | 18 (30.5) | 18 (29.5) | 67 (32.8) |
- JAMA | 6 (7.1) | 6 (10.2) | 4 (6.6) | 16 (7.8) |
- JAMA Internal Medicine/Archives of Internal Medicine | 13 (15.5) | 11 (18.6) | 4 (6.6) | 28 (13.7) |
- Mayo Clinic Proceedings | 1 (1.2) | 3 (5.1) | 0 | 4 (2.0) |
- NEJM | 1 (1.2) | 0 | 0 | 1 (0.5) |
- PLOS Medicine | 6 (7.1) | 0 | 0 | 6 (2.9) |
- The Lancet | 10 (11.9) | 0 | 14 (23.0) | 24 (11.8) |
Mean number of authors | 8.2 (5.8) | 8.4 (5.4) | 9.1 (4.9) | 8.5 (5.4) |
Abstract format | ||||
- IMRAD | 35 (41.7) | 12 (20.3) | 25 (41.0) | 72 (35.3) |
- 8-headings | 49 (58.3) | 47 (79.7) | 36 (59.0) | 132 (64.7) |
PRISMA endorser journals | ||||
- Yes | 57 (67.9) | 43 (72.9) | 50 (82.0) | 150 (73.5) |
- No | 27 (32.1) | 16 (27.1) | 11 (18.0) | 54 (26.5) |
Publication on behalf of a group | ||||
- Yes | 8 (9.5) | 4 (6.8) | 7 (11.5) | 19 (9.3) |
- No | 76 (90.5) | 55 (93.2) | 54 (88.5) | 185 (90.7) |
Actual observed abstract word count | ||||
- <300 | 14 (16.7) | 16 (27.1) | 11 (18.0) | 41 (20.1) |
- ≥300 | 70 (83.3) | 43 (72.9) | 50 (82.0) | 163 (79.9) |