Table 2.

Summary statistics of (weighted) prediction errors for main capecitabine metabolites.

Metabolite	n	Mean	SD	Min.	Max.	P*
5′-DFUR	781	0.039	1.70	−1.65	40.4	0.521
5-FU	780	0.110	1.78	−2.20	42.9	0.085
FBAL	770	0.004	1.19	−11.23	13.33	0.918

^*P is the probability of a greater absolute value of the Student's t-value under the hypothesis that the mean is zero.