Prognosis of the Keratinizing Squamous Cell Carcinoma of the Tongue Based on Surveillance, Epidemiology, and End Results Database

Figure 4

Calibration curves for the new nomogram. Both the t training cohort (a–c) and validation cohort (d–f) show that the calibration curves of the new nomogram are very close to the standard curve, and the points on the curve are evenly distributed.

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(b)

(c)

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(f)