Table 1. Demographic and hospital information for cases missed by the PPEO, which caused the emergency code to be applied in the hospital building (n = 449).

Variables		Values
Sex
	Male	172 (38.3)
	Female	277 (61.7)
Patient/accompanying guardian
	Patient	448 (99.8)
	Accompanying guardian	1 (0.2)
Age, yr
	≤ 19	33 (7.3)
	20–39	81 (18.1)
	40–49	47 (10.5)
	50–59	59 (13.1)
	60–69	92 (20.5)
	≥ 70	136 (30.3)
	Not identified	1 (0.2)
Whether first-time visitor to hospital
	Yes	110 (24.5)
	No (returning visitor)	339 (75.5)
Time of hospital visit
	Morning office hour (8:30–12:00)	253 (56.3)
	Afternoon office hour (13:30–17:00)	196 (43.7)
Day of hospital visit
	Monday	109 (24.3)
	Tuesday	101 (22.5)
	Wednesday	71 (15.8)
	Thursday	93 (20.7)
	Friday	59 (13.1)
	Saturday	16 (3.6)
Department
	Anesthesiology and pain medicine	6 (1.3)
	Dermatology	26 (5.8)
	Dentistry	21 (4.7)
	Family medicine	19 (4.3)
	General surgery	24 (5.3)
	Health Screening Center	3 (0.7)
	Internal medicine, cardiology	4 (0.9)
	Internal medicine, endocrinology	13 (2.8)
	Internal medicine, gastroenterology	52 (11.6)
	Internal medicine, hematology	10 (2.2)
	Internal medicine, infection	3 (0.7)
	Internal medicine, nephrology	19 (4.2)
	Internal medicine, oncology	4 (0.9)
	Internal medicine, pulmonology	4 (0.9)
	Internal medicine, rheumatology	2 (0.4)
	Neurology	6 (1.3)
	Neurosurgery	16 (3.6)
	Nuclear medicine, diagnostics	8 (1.8)
	Obstetrics and gynecology	7 (1.6)
	Ophthalmology	21 (4.7)
	Orthopedics	15 (3.3)
	Otorhinolaryngology	93 (20.7)
	Pediatrics	12 (2.6)
	Plastic surgery	8 (1.8)
	Psychiatry	8 (1.8)
	Radiation oncology	4 (0.9)
	Radiology, diagnostics	11 (2.5)
	Rehabilitation	3 (0.7)
	Thoracic surgery	1 (0.2)
	Urology	26 (5.8)

Values are presented as number (%).

PPEO = prescreening process at the entrance of the outpatient clinic.