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. 2020 May 12;27(1):1073274820924728. doi: 10.1177/1073274820924728

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© The Author(s) 2020

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 1. — A, Associations between tumor stage and overall survival were assessed by CART analysis. For model 1, while stage III/IV + surgical margins generated 2 terminal nodes (group 5 and group 6), stage 0 to II was segmented by tumor site forming terminal node for penis glans/NOS and was further segmented by macroscopic/microscopic/residual tumor, NOS (group 1) and no residual tumor (group 2), and prepuce/corpus/overlapping lesion as married (group 3), or single/divorced/widowed (group 4). B, N stage segmented to form terminal nodes for N stage 2 to 3 (group 5 and group 6), and N stage 0 to 1 which further segmented on tumor differentiation, resulting in terminal node for poorly and undifferentiated tumors (group 4). Tumor differentiation further segmented on tumor site with a terminal node for penis glans/NOS (group 1) and marital status segmented to 2 terminal nodes for married (group 2) and single/widowed/divorced (group 3). C, Overall differences in survival between CART groups for model 1 were significant (log rank P < .001). D, Overall differences in survival between CART groups for model 2 were significant (log rank P < .001). CART indicates classification and regression tree; NOS, not otherwise specified.