TABLE 5.

The mean absolute error (MAE) at 95% confidence interval (CI) for the prediction of the value of $C_{ss}$ of VPA in the derivation cohort for the XGBoost and other regression models.

Models	Training set		Test set
	MAE (mg/L)	(+/-) 95% CI of MAE (mg/L)	MAE (mg/L)	(+/-) 95% CI of MAE (mg/L)
XGBR	1.7	0.1	2.5	0.1
RFR	1.2	0	3.1	0.2
BR	1.5	0	3.5	0.2
DTR	0	0	5.1	0.3
GBR	6.0	0.1	6.2	0.2
MLR	10.2	0	10.2	0.4
ABR	14.1	0.3	14.2	0.7