Table 5.

Demographic statistics.

Variables	Levels	Frequency	Percentage
Gender	Male	71	30.3%
	Female	163	69.7%
Age	<=25	64	27.4%
	26–35	153	65.4%
	36–45	15	6.4%
	>=45	2	0.9%
Education	High school	4	1.7%
	Junior college	32	13.7%
	Undergraduate	146	62.4%
	Graduate	52	22.2%
Income per month (¥)	<=1000	24	10.3%
	1001–2000	17	7.3%
	2001–4000	70	29.9%
	4001–8000	77	32.9%
	>=8000	46	19.7%
Internet experience	<=2 years	2	0.9%
	3–4 years	17	7.3%
	5–6 years	51	21.8%
	7–8 years	55	23.5%
	>= 8 years	109	46.6%