Figure 4.
A box-and-whisker plot of pharmacokinetic parameters, AUCinf (a) and Cmax (b) after oral administration of metformin, as a function of the OCT3 haplotype (control group, n = 20; variant group, n = 25). The horizontal lines within each box represent the median. The box edges show lower (25th) and upper (75th) quartiles. The whiskers extend from the 25th and 75th quartiles to the furthest data point within a distance of 1.5 interquartile ranges from the 25th and 75th quartiles. P-values were calculated by the Mann–Whitney test.