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. Author manuscript; available in PMC: 2015 Feb 26.
Published in final edited form as: Pediatr Dev Pathol. 2014 Sep 10;17(6):441–449. doi: 10.2350/14-06-1505-OA.1

Figure 3.

Figure 3

Cox proportional hazards model for event-free survival with age ≥ cut-off (in months) for patients with low-MKI (A, n = 2365), intermediate-MKI (B, n = 1068), and high-MKI (C, n = 849) tumors. The hazard ratio (with 95% confidence intervals) is the increased risk of event in the group of patients with age ≥ cut-off in comparison to the group with age < cut-off. Shaded areas (between 28 and 60 months for low MKI, 12 and 18 months for intermediate MKI, and 3 and 4 months for high MKI) indicate age cut-off points, effectively differentiating 2 groups of patients in terms of increased risk of event for older children in each MKI class. MKI indicates mitosis-karyorrhexis index.