Table 2 Effect of conflicts of interest and industry funding on level of evidence
Level of Evidence | Any author(s) reporting conflicts | Disclosure of industry funding | ||
|---|---|---|---|---|
Yes | No | Yes | No | |
I | 20.0% | 30.8% | 30.8% | 25.7% |
II | 22.9% | 17.3% | 23.1% | 18.9% |
III | 57.1% | 51.9% | 46.2% | 55.4% |
|  | χ2 = 1.35, P = 0.508 | χ2 = 0.38, P = 0.826 | ||