Fig. 6

NHW female melanoma incidence by site: multiplex analysis. A Heat maps of observed data (left column) and optimal fitted values (right column). B Model selection. Abscissa values \({\Delta }^{b}=\left({{AIC}_{c\ p}^{*}}_{_{b}}-{{AIC}_{c\ p}^{*}}_{_{opt}}\right),b=1,\dots ,15\), differentials of bias-corrected \({AIC}_{c}\) for the 15 partitions of 4 strata, versus the overall minimum. Body site codes are Head and Neck, blue “H”, Upper Limb, purple “U”, Trunk, green “T”, and Lower Limb, pink “L”. The optimal partition number is 4, which consists of subsets {HU}{TL}. Y-axis Label {L}{X} indicates that subset {HU} is PH-L and subset {TL} is PH-X