Figure 3. Preference Variation Over the Course of Emergency Department Shift for Observable Patient Characteristics and Top 20 Chief Concern Groups, as Measured by Shift Order Group Fixed Effects.

Patients in each shift were binned according to the order in which they were seen during a shift, up to 5 shift order groups: patients 1 to 5, 6 to 10, 11 to 15, 16 to 20, and 21 and more. The F score was F₄ = 292.3 (P < .001) for the differences in age, F₄ = 563.4 (P < .001) for Emergency Severity Index score (ESI), and F₄ = 125.1 (P < .001) for comorbidity score. Shaded areas indicate 95% CIs.

^aPatients 1-5 was the reference group.