Results
During the study, 1,625 persons were seen in the PED, 
and 259 were taken to the observation room; 16% of the 
patients remained under observation, and only 9.4% were 
hospitalized. Of the eligible patients, 13 were discharged 
during the night, before the authors visited to the PED in 
the morning and were not included. Therefore, the final 
sample was composed of 110 subjects (Figure 1).