Results of fits of optimal excess relative risk model (2) (maximum likelihood fits and 95% profile CI), all based on TD-10 dose estimates adjusted using 1^st regression calibration method (of Kukush <i>et al.</i>). All models have underlying rates adjusted for age (treated categorically)

aUnless otherwise stated all p-values refer to improvement in fit of model immediately above indicated one in the Table. bp-value for improvement in fit over null model (without linear dose term). cp-value for improvement in fit over model 2, linear-exponential in dose. dindications of lack of convergence. eWald-based CI.