Table 1.

Respondents’ profiles (n = 1216)

	n = 1216	%
Gender
Female	628	51.6
Male	588	48.4
Education
High School	91	7.5
Colleage	99	8.1
Graduate University	755	62.1
Master/Phd.	271	22.3
Occupation
Offical staff	586	48.2
Unemployment	12	1
Factory workers	49	4
Engineer	105	8.6
Self-employed	362	29.8
Lecturer/teacher	40	3.3
Others	62	5.1
Income
under 10 million VND/month	56	4.6
10- under 15 million VND/month	192	15.8
15- under 20 million VND/month	439	36.1
> 20 million VND/month	529	43.5