| Education level | N | % |
| Diploma and associate degree | 14 | 19.7 |
| Assistant | 8 | 11.3 |
| BA | 26 | 36.6 |
| MA | 19 | 26.8 |
| Ph.D | 4 | 5.6 |
| Total | 71 | 100.0 |
| Age of participants | N | % |
| <30 years | 12 | 16.9 |
| 31 - 40 years | 32 | 45.1 |
| 41 - 50 years | 17 | 23.9 |
| 51 - 61 years | 5 | 7.0 |
| >60 years | 5 | 7.0 |
| Total | 71 | 100.0 |
| Marital status of participants | N | % |
| Married | 44 | 62.0 |
| Single | 27 | 38.0 |
| Total | 71 | 100.0 |
| The gender of the participants | N | % |
| Man | 44 | 62.0 |
| Female | 27 | 38.0 |
| Total | 71 | 100.0 |
| Store’s name | N | % |
| O1 (private stores) | 16 | 22.5 |
| J2 (private stores) | 16 | 22.5 |
| R1 (public stores) | 18 | 25.4 |
| S2 (public stores) | 21 | 29.6 |
| Total | 71 | 100.0 |
| Participation Purchase History | N | % |
| <1 year | 14 | 19.7 |
| 1 - 2 years | 14 | 19.7 |
| 3 - 4 years | 14 | 19.7 |
| 5 - 6 years | 10 | 14.1 |
| >6 years | 19 | 26.8 |
| Total | 71 | 100.0 |