Fig. 4
From: Low dose radiation risks for women surviving the a-bombs in Japan: generalized additive model
Ability to capture a known response. Data is simulated (Appendix B) over B- with RR = 1 + ERR as specified by the formulas in Panels a and c, without interactions. Thick black curves show the true RR. Simulated data is modelled by P2e (Table 2) in Panels a and c, and remodelled by P2d (Table 2) in Panels b and d. At dose = 10, 20... 100 mGy, fitted values and 90% CIs are obtained at each simulation step. Coverage is the % over all 10 doses for which the simulated CI contains the true RR. Panels display the geometric means (hollow dots) interpolated by smoothing splines, green for fitted values, blue (red) for lower (upper) 95% CIs