| Freq. | Percent |  | Freq. | Percent |
Gender | Country of living | ||||
 Female | 90 | 59.2 |  The USA | 53 | 34.9 |
 Male | 62 | 40.8 |  Australia | 49 | 32.2 |
Age group |  France | 18 | 11.8 | ||
 18–25 | 36 | 23.7 |  Japan | 11 | 7.2 |
 26–35 | 37 | 24.3 |  Germany | 8 | 5.3 |
 36–45 | 32 | 21.1 |  Others | 13 | 8.6 |
 46–55 | 30 | 19.7 | |||
 Over 55 | 17 | 11.2 | |||
Type of dental treatment | Service familiarity | ||||
 Specialist treatment | 71 | 46.7 |  1st time | 72 | 47.4 |
 Cosmetic dental | 33 | 21.7 |  2–3 times | 61 | 40.1 |
 Both | 48 | 31.6 |  Over 3 times | 19 | 12.5 |