Figure 2  Histograms comparing the distribution of the posterior means of the relative risks estimated by the BYM or MIX models for the high-risk areas of Simu 2 or Simu 3 using a scale factor of 4 for the expected values and a true relative risk (marked by the vertical line on each plot) of θ = 2 (Simu 2) or θ *1=1.65 (Simu 3).