Table 2. The Ratios of Monthly Emergency Room Visits in 2005 to the Average Visits of Corresponding Months in 2014 and 2016 according to Disease Severity (%).

Month	High-acuity disease								Low-acuity disease
	Myocardial infarction		Cardiac arrest		Ischemic stroke		Hemorrhagic stroke		AGE		APT		AOM		URI
	%	p value*	%	p value*	%	p value*	%	p value*	%	p value*	%	p value*	%	p value*	%	p value*
May	98.2	0.463	100.2	0.992	96.2	0.019	101.1	0.732	99.7	0.411	92.0	<0.001	90.8	<0.001	95.7	<0.001
June†	86.0	<0.001	103.5	0.401	83.4	<0.001	102.4	0.443	66.2	<0.001	60.1	<0.001	47.0	<0.001	54.8	<0.001
July†	94.6	0.050	99.2	0.802	95.7	0.011	101.0	0.786	83.3	<0.001	60.5	<0.001	67.2	<0.001	60.4	<0.001
August	96.9	0.267	95.4	0.209	98.3	0.309	98.3	0.553	99.1	0.097	101.4	0.606	101.2	0.728	100.9	0.290

AGE, acute gastroenteritis; APT, acute pharyngotonsillitis; AOM, acute otitis media; URI, upper respiratory infection.

^*p value from chi-square test; ^†Values during Middle East respiratory syndrome epidemic period (June to July).