Box plots at baseline for endpoint successes and failures. (a) Area under the plasma concentration-versus-time curves between 0 and 12 hours of mycophenolic acid (MPA AUC0-12 h). (b) Twelve-hour trough concentrations of MPA (MPA C12 h). (c) Ratios of mycophenolic acid glucuronide (MPAG) to MPA C12 h. Black squares inside the boxes are means, the lower and upper box limits are standard deviations, and T bars correspond to the range. *Mann-Whitney U test.