Table 3.

Demographical Analysis between ED Visits in Nation-wide Hospital ED-based Syndromic Surveillance System and Population Composite in Taiwan, April 1, 2004 – March 31, 2005

Age Groups	(Years)	Number of ED Visits	Percent of Total ED Visits (%)	Proportion of Total Population in Taiwan, 2005 (%)
	0–9	499,457	18.55%	11.63%
	10–19	241,724	8.98%	14.06%
	20–29	469,214	17.43%	16.98%
	30–39	353,422	13.13%	16.04%
	40–49	308,509	11.46%	16.40%
	50–59	242,167	8.99%	11.73%
	60–69	200,846	7.46%	6.57%
	70–79	235,134	8.73%	4.69%
	80–89	121,753	4.52%	1.70%
	90–100	20,009	0.74%	0.20%
	>100	90	0.00%	0.01%
Gender
	Males	1,423,835	52.87%	50.78%
	Females	1,269,193	47.13%	49.22%
Total		2,692,325	100.0%	100%