Effects of age at time of bombing (ATB) and city on the radiation dose response for diabetes incidence. The curves display the trend for age at exposure in hazard ratio at 1 Gy based on the linear dose model with effect modification by city and continuous age ATB. The points are hazard ratios at 1 Gy for each combination of city and age ATB category (<15, 15-29, and ≥ 30) with 95% CIs.