Table 2 Participants’ orthodontic background and relevant conditions
From: A survey regarding orthodontic treatment among contemporary college freshmen in China
| Â | N | % |
|---|---|---|
Have you ever heard of orthodontics? (Na = 3308) | ||
 Yes | 2922 | 88.33 |
 No | 386 | 11.67 |
Do you have any relatives or friends engaged in orthodontic-related fields? (Na = 3308) | ||
 Yes | 1071 | 32.38 |
 No | 1848 | 55.86 |
 Not sure | 389 | 11.76 |
Do you have experience of orthodontic treatment? (Na = 3308) | ||
 Yes | 1609 | 48.64 |
 No | 1699 | 51.36 |
If yes, when did you start orthodontic treatment? (Na = 1609) | ||
 At the age of 3–6 | 211 | 13.11 |
 At the age of 7–11 | 522 | 32.45 |
 At the age of 12–15 | 567 | 35.24 |
 At the age of 16 and later | 309 | 19.20 |
Are you satisfied with the results of orthodontic treatment? (Na = 1609) | ||
 Very dissatisfied | 89 | 5.53 |
 Dissatisfied | 280 | 17.40 |
 Satisfied | 801 | 49.78 |
 Very satisfied | 439 | 27.29 |
Do you think your teeth have a phenomenon of relapse? (Na = 1609) | ||
 Not sure | 120 | 7.46 |
 No relapse | 502 | 31.20 |
 Slight relapse | 615 | 38.22 |
 Obvious relapse | 372 | 23.12 |
If your orthodontic treatment is now over, is there a need to retreat? (Na = 1609) | ||
 Unnecessary or dispensable | 642 | 39.90 |
 Necessary | 967 | 60.10 |