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. 2013 Jul 8;8(7):e69462. doi: 10.1371/journal.pone.0069462

Table 1. Characteristics of articles included in the study (n=75).

n (%)
Year of publication
1991-1995 5 (6.7)
1996-2000 23 (30.7)
2001-2005 14 (18.7)
2006-2011 33 (44.0)
Journal impact factor, quartiles (Q)
Q1 44 (58.7)
Q2 13 (17.3)
Q3 5 (6.7)
Q4 1 (1.3)
None 12 (16.0)
Journal subject category*
Cardiac & cardiovasc. systems/peripheral vasc. disease 22 (29.3)
Medicine, general & internal 18 (24.0)
Pharmacology & pharmacy 10 (13.3)
Health care sciences & services/health policy & serv. 9 (12.0)
Endocrinology & metabolism 3 (4.0)
Other/none 13 (17.3)
Region of study
Europe 37 (49.3)
North America 33 (44.0)
Other 5 (6.7)
First author affiliation**
Academia 33 (44.0)
Private 21 (28.0)
Hospital 18 (24.0)
Other 3 (4.0)
One or more author industry or consulting firm employee
Yes 31 (41.3)
No 44 (58.7)
Funding source
Industry 48 (64.0)
Non-profit/Government 14 (18.7)
No funding/none disclosed 13 (17.3)
Interventions
Statin versus statin 23 (30.7)
Statin versus non-active alternative 52 (69.3)
Prevention category
Primary 29 (38.7)
Secondary 32 (42.7)
Both 14 (18.7)
*

Subject category as reported in the 2010 Journal Citation Report. Data do not equal 100% because of rounding errors.

**

The affiliation categories of the first author were mutually exclusive according to the following hierarchie: private > academia > hospital > other.