Table 4.

Quantitative comparison between our method and linear regression model using mean absolute errors (MAE) and mean relative errors (MRE)

	Target time point
	3rd month	6th month	9th month	12th month
Our Method (MAE) (mm)	0.209 ± 0.026	0.332 ± 0.037	0.340 ± 0.030	0.321 ± 0.028
Linear Regression (MAE) (mm)	0.244 ± 0.025	0.370 ± 0.041	0.388 ± 0.033	0.362 ± 0.035
Our Method (MRE) (%)	9.9 ± 1.1	13.1 ± 0.9	12.4 ± 0.8	11.7 ± 0.9
Linear Regression (MRE) (%)	11.3 ± 1.0	14.6 ± 1.1	14.4 ± 0.9	13.2 ± 1.1