Table 3

Quality of studies supported by the tobacco industry compared with those that are not

Percent of studies . . .	Industry supported studies	Non-industry studies	Odd ratios (95% CI)	p Value
CI, confidence intervals.
Including an objective outcome measure	18% (5/31) ^57–⁶¹	50% (30/60)⁵ ^25,^29,^30,^33–^56,^98,¹¹³	5.2 (1.7 to 15.4)	0.003
Meeting all four methodological criteria	0% (0/31)	35% (21/60)^5,^25,^29,^30,^34–^36,^42–^46,^48,^49,^51–^56,⁹⁸	Infinite
Subject to peer review	3% (1/31) ⁸⁴	38% (23/60)^5,^35,^42,^44–^49,^54,^56,^63–^66,^71,^72,^75–^77,^98,^101,¹¹⁵	18.5 (2.4 to 142.9)	0.005