Table 1 Numbers of systematic reviews published in periodontology and implant dentistry reporting and discussing primary studies' sources of financial support

From: Reporting of sources of funding in systematic reviews in periodontology and implant dentistry

Year of publication

Number of systematic reviews published

Sponsorship reported N (%)

Sponsorship discussed N (%)

1992-2001*

9

0 (0)

0 (0)

2002

10

6 (60)

1 (10)

2003

11

7 (64)

1 (9)

2004

3

1 (33)

0 (0)

2005

9

2 (22)

2 (22)

2006

4

1 (25)

0 (0)

2007

12

2 (17)

1 (8)

2008

13

4 (29)

1 (8)

2009

14

5 (36)

2 (14)

2010

20

6 (30)

1 (5)

2011

13

5 (38)

2 (15)

2012

28

6 (21)

3 (11)

  1. *Grouped due to the limited number of systematic reviews published before 2001