Use of the SONET Score to Evaluate High Volume Emergency Department Overcrowding: A Prospective Derivation and Validation Study

Table 2

Percentage of ED crowding statuses determined by the SONET and NEDOCS scores in both the derivation and validation studies.

Emergency Department	JPS Health Network		Baylor University Medical Center
	NEDOCS ()	SONET ()	NEDOCS ()	SONET ()
Severely overcrowded	100 (48.54%)	39 (18.93%)	9 (3.88%)	2 (0.86%)
Overcrowded	53 (25.73%)	85 (41.26%)	52 (22.41%)	32 (13.79%)
Not overcrowded	53 (25.73%)	82 (39.81%)	171 (73.71%)	198 (85.34%)

indicates the number of time points that the ED crowding status was measured. JPS ED noted a 61% decrease in severely overcrowded scores when using SONET as compared to NEDOCS tools. The overall overcrowded status scores decreased from 74.27% to 61.19% (13.08%). BUMC ED noted a 77% decrease in severely overcrowded scores when using SONET as compared to NEDOCS tools. The overall overcrowded status scores decreased from 26.29% to 14.66% (11.63%).