Comparison 4. Subgroup analyses for advisory committee reports.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
4.1 Different types of financial conflicts of interest	1		Risk Ratio (IV, Random, 95% CI)	Subtotals only
4.1.1 Consultancy	1	77	Risk Ratio (IV, Random, 95% CI)	1.43 [0.88, 2.31]
4.1.2 Grants	1	54	Risk Ratio (IV, Random, 95% CI)	1.17 [0.66, 2.07]
4.1.3 Investments	1	64	Risk Ratio (IV, Random, 95% CI)	1.49 [0.91, 2.44]
4.1.4 Lecturing and honoraria	1	53	Risk Ratio (IV, Random, 95% CI)	1.77 [1.10, 2.87]
4.1.5 Other relationships	1	40	Risk Ratio (IV, Random, 95% CI)	1.75 [1.02, 3.00]
4.2 Advisory committee reports with major financial conflicts of interest versus advisory committee reports with minor financial conflicts of interest	2		Risk Ratio (IV, Random, 95% CI)	Subtotals only
4.2.1 Major financial conflicts of interest	2	129	Risk Ratio (IV, Random, 95% CI)	1.38 [0.96, 1.99]
4.2.2 Minor financial conflicts of interest	2	104	Risk Ratio (IV, Random, 95% CI)	1.35 [0.97, 1.88]