Quantile–Quantile (QQ) plots. We present two QQ plots, one for Match 1(does not include BMI) and one for Match 2 (with BMI). For both plots, we rank all whites in order of total procedure length (i.e., anesthesia time from induction to recovery room) on the x-axis and time for all blacks on the y-axis. Each point represents a white–black “pair” matched only on the quantile. For scaling purposes, two patients with outlier procedure times were removed from each plot. For both Match 1 and Match 2 samples, we observe the same pattern, a nonparallel divergence from the identity line, suggesting that the disparity we observe in procedure length does not reflect merely a constant increase in length for all black patients. BMI = body mass index; PATS = patients.