CART analysis. Age, sex, race, treatment arm, body mass index, dexamethasone AUC, cholesterol, albumin, and 20 SNPs described in supplemental Table 8 were allowed to compete in the CART analysis. Black and white colors in the pie chart represent the percentage of patients with grade 0 to 1 and grade 2 to 4 osteonecrosis (ON), respectively. Each number indicates the number of patients at the branch point.