1. Gender
□ Male	□ Female
2. Marital Status
□ Single	□ Married
3. Family Size	□ 1	□ 2	□ 3	□ 4	□ >4
4. Age
□ Below 25 years	□ 25–34 years
5. Income
□ Below 10,000 THB	□ 10,001–20,000 THB	□ 20,001–30,000 THB
□ 30,001–40,000 THB	□ Over 40,001 THB
6. Level of education
□ Diploma or below	□ Bachelor
□ Master	□ PhD
7. Occupation
□ Student	□ Government Employee	□ State enterprise officer
□ Employee	□ Business owner