Fig. 1. Stacked bar chart represents the relative proportions of patients coming for surgical procedures in the operating room (OR) as scheduled (OR show) to patients missing scheduled surgical procedures (OR no show) among patients classified in each of the lowest four quintiles by their rates of nonappearance (no-show) behavior in outpatient hospital clinics. The proportion of OR nonappearance behavior increases dramatically in the higher quintiles. There were no patients in the data set classified in the highest quintile (> 80% clinic nonappearance rate), so this bar has been omitted.