Fig. 3

Process length in the 3 clinical groups. Time span was longer and dispersion higher when patients arrived to the emergency department (ED) by themselves (group 3) or when referred to the ED from the primary care high-resolution radiology service (pcHRRS) (group 2) than pcHRRS patients discharged with normal X-rays (group 1). Box upper and lower edges correspond to quartiles 3 (Q3) and 1 (Q1), respectively; ends of the whiskers represent Q3 + 1.5*(Q3 − Q1) and Q1 − 1.5*(Q3 − Q1), respectively; circles and asterisks represent the extreme and very extreme data, respectively (values above or below the whiskers). Group 1 extreme data of 5 h or more correspond to a few specific patients who did not show up at their scheduled time but did so later and even on the following day