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Fig. 2 | Journal of Orthopaedic Surgery and Research

Fig. 2

From: Nomogram to predict collapse-free survival after core decompression of nontraumatic osteonecrosis of the femoral head

Fig. 2

Calibration plot comparing predicted and actual collapse-free survival probabilities at 3-year follow-up. The 50-sample bootstrapped calibration plot for the prediction of 3-year collapse-free survival is shown. The gray line represents the ideal fit; circles represent nomogram-predicted probabilities; the cross represents the bootstrap-corrected estimates; and the error bars represent the 95% CIs of these estimates

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