Table 1.

Performance of automated SMI assessment system.

SMI	Sensitivity	Specificity	MAE	RMSE
0	0.933	0.972	0.067	0.258
1	0.188	0.990	0.938	1.09
2	0.423	0.993	0.846	1.177
3	0.856	0.982	0.25	0.756
4	0.778	0.978	0.333	0.745
5	0.000	1	1	1
6	0.720	0.955	0.355	0.726
7	0.884	0.944	0.116	0.341
8	0.574	0.997	0.5	0.805
9	0.630	0.990	0.37	0.609
10	0.877	0.969	0.123	0.350
11	0.882	0.972	0.118	0.343
Overall	0.646	0.978	0.27	0.604
Prediction accuracy 0.772			Balanced accuracy 0.646

SMI, skeletal maturity indicators; MAE, mean absolute error; RMSE, root mean square error.