Table A6.1. The different assumptions in the published models.

Model spec	Assumptions
Regression technique	Linear regression on rates and Poisson regression on counts
Pre-screening era year end	1984 through to 1988
Screening age group	50–64, 45–49 and 50–64, and 45–64
Post-screening age group	65–74, 65–69 and 70 and over, and 65 plus
Screening era	All combinations starting with 1989–1993 and ending in 2002–2004
Compensatory drop adjustment	Rate ratio and difference of counts
Risk adjustment	None and for increasing trend in under 45s