Comparison 1. Primary analyses.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1.1 Financial conflicts of interest	13		Risk Ratio (IV, Random, 95% CI)	1.26 [1.09, 1.44]
1.1.1 Clinical guidelines	4		Risk Ratio (IV, Random, 95% CI)	1.26 [0.93, 1.69]
1.1.2 Advisory committee reports	4		Risk Ratio (IV, Random, 95% CI)	1.20 [0.99, 1.45]
1.1.3 Opinion pieces	4		Risk Ratio (IV, Random, 95% CI)	2.62 [0.91, 7.55]
1.1.4 Narrative reviews	4		Risk Ratio (IV, Random, 95% CI)	1.20 [0.97, 1.49]