Spatial and temporal distributions of significant racial disparities for prostate cancer late-stage diagnosis. Coincidence and parallelism of county-level time series of proportion of prostate cancer cases diagnosed late for white and black males were tested using a significance level α = 0.01. Multiple testing corrections were performed using the False Discovery Rate (FDR) approach. White polygons depict non-significant (NS) differences. Map (C) displays the number of years where the 95% confidence intervals of APC for white and black males did not overlap (Equation 6).