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. Author manuscript; available in PMC: 2016 Nov 1.
Published in final edited form as: Virology. 2015 Sep 7;485:467–472. doi: 10.1016/j.virol.2015.08.022

Figure 3.

Figure 3

Classification tree analysis predicting PML among 25 cases and 80 matched controls. Classification tree analysis was performed by using Splus software. Predictors in the analysis included CD4+ T-cell count, and BKPyV 1, BKPyV 4, and JCPyV OD values. The predictor and cut off used to stratify subjects is shown above the horizontal line and the number of subjects and percentage that is cases is indicated below the line. Terminal nodes (vertical lines ending without further division) are labeled Case or Ctrl (control) based on a majority of classified subjects falling into that strata. For each terminal node, the number of subjects, percentage of cases, and absolute number of cases is indicated.