Figure 5

Diagram of the age-period-cohort model and its sub-models. The models are nested from right to left. APC age-period-cohort model, AC age-cohort model, AP age-period model, Ad age-drift model, PC period-cohort model, Pd period-drift model, Cd cohort-drift model, A age model, P period model, C cohort model, A age model, t trend model, At age-trend model, Pt period-trend model, Ct cohort trend model, 1: intercept model. The term drift means that there must be some temporal variation in rates that cannot be interpreted as the effect of other non-specified parameters in the model.