Table 1. Respondents’ profile.

Respondents’ characteristics (N = 641)		Frequency	Percentage
Gender	Male	223	34.8
	Female	418	65.2
Income	Under 5 million VND	129	20.1
	From 5–10 million VND	134	20.9
	From 10–15 million VND	146	22.8
	From 15–20 million VND	114	17.8
	Over 20 million VND	118	18.4
Purchase frequency over 3 months	Less than 3 times	247	38.5
	From 3–5 times	252	39.3
	More than 5 times	142	22.2