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Table 2 Articles about Dietary Supplements (DS)

From: Does pharmaceutical advertising affect journal publication about dietary supplements?

Characteristics

Number of issues reviewed

Number of ANY articles about DS

Clinical Trials or Cohort Studies

Editorials

Reviews

TOTAL MAJOR ARTICLES (PER ISSUE)*

Most Pharmads (2 journals; average impact factor 6.9) TOTALS

49

35

0

2

2

4

   Number per issue

 

0.71

0

0.02

0.02

(0.08)*

Middle Pharmads (7 journals; average impact factor 18.5) Totals

220

142

30

15

2

47

   Number per issue

 

0.65

0.14

0.07

0.01

(0.21)*

Fewest Pharmads (2 journals; average impact factor 5.9) Totals

65

77

14

11

3

28

   Number per issue

 

1.2

0.22

0.17

0.05

(0.43)*

CAM JOURNALS

22

88

11

2

6

19

   Number per issue

 

4

0.5

0.09

0.27

(0.86)*

  1. *Overall differences in rates of publishing major articles about DS are statistically significant with P < 0.001. The rate for those with the most pharmads (0.08) is significantly lower than those with middle pharmads (0.21, P < 0.05). The rate for those with the middle pharmads (0.21) is significantly lower than those with the fewest pharmads (0.43, P < 0.05). The rate for the CAM journals (0.86) is significantly higher than that for the general medical journals with the fewest pharmads (<0.01)