TABLE 1.

Respondents’ characteristics.

Variables		N (%)
Gender	Men	743 (49.5)
	Women	757 (50.5)
Age	20–29	261 (17.4)
	30–39	259 (17.3)
	40–49	305 (20.3)
	50–59	389 (25.9)
	60+	286 (19.1)
Household Income (KRW)	<\2,000,000	153 (10.2)
	\2,000,000–\3,990,000	458 (30.5)
	\4,000,000–\5,990,000	508 (33.9)
	\6,000,000≤	381 (25.4)
Education	Less than middle school	46 (3.1)
	High school	342 (22.8)
	College and more	1,112 (74.1)
Social networking service	No use	138 (9.2)
	Former use	221 (14.7)
	Current use	1,141 (76.1)