Table 4.

Bias Parameters for Adjustment of Selection Bias, With Assigned Values Used in the Probabilistic Multiple-Bias Modeling, Interphone Study, Montréal, Ottawa, and Vancouver, Canada, 2001–2004

Participant Category	Trapezoidal Distribution
	Minimum	Lower Mode	Upper Mode	Maximum
Cases
Regular users	0.50	0.60	0.70	0.80
Not regular users	0.48	0.58	0.68	0.78
Controls
Regular users	0.40	0.50	0.60	0.70
Not regular users	0.33	0.43	0.53	0.63