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Fig. 5 | BMC Cancer

Fig. 5

From: Non-linear transformations of age at diagnosis, tumor size, and number of positive lymph nodes in prediction of clinical outcome in breast cancer

Fig. 5

Kaplan-Meier estimates of distant recurrence-free interval (D-RFi) for risk groups G1 to G4 formed by categorization of the prognostic index (PI) for the MFP model in the derivation set at the 16th, 50th and 84th percentiles. Solid lines were used for estimates in the derivation set and dashed lines for the corresponding estimates in the validation set. Note that the actual values of the PI at the cutoffs in the derivation set were used as cutoffs for the PI in the validation set, leading to different relative sizes of the four groups in the two datasets. Abbreviations: Der. = Derivation set, Val. = Validation set

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