Fig. 3.

Classification matrices for tertile category agreement between observed and predicted exposure categories in the urine for the four comparisons with the highest observed Pearson’s correlation coefficients: (a-b) 2-OH- & 3-OH-PHEN and PHEN, (c-d) 1-OH-PHEN and PHEN, (e-f) 2-OH-FLU and FLU, and (g-h) 1-OH-NAPH and NAPH. Color indicates relative mean prediction probability. Observed exposure tertile is given on the x-axis and predicted exposure tertile based on associated compound data, on the y-axis.