Research Article
Orthodontic Treatment Characteristics and Outcomes in an Educational Setting
Table 2
Sample characteristics (N = 287).
| Variable | N | Percent |
| Age | 18 and under: ≤18 yrs | 244 | 85.0 | older than 18: >18 yrs | 43 | 15.0 |
| Sex | Male | 122 | 42.5 | Female | 165 | 57.5 |
| Ethnicity | White | 238 | 82.9 | Hispanic | 7 | 2.4 | Asian | 9 | 3.1 | Black | 30 | 10.5 | Other | 3 | 1.0 |
| ABO DI score | <10 | 79 | 27.5 | 10 to 20 | 134 | 46.7 | >20 | 74 | 25.8 |
| Malocclusion | Class I | 129 | 44.9 | Class II div 1 | 93 | 32.4 | Class II div 2 | 42 | 14.6 | Class III | 23 | 8.0 |
| Missing teeth | No | 258 | 89.9 | Yes | 29 | 10.1 |
| Impacted teeth | No | 252 | 87.8 | Yes | 35 | 12.2 |
| Extraction treatment | No | 214 | 74.6 | Yes | 73 | 25.4 |
| Interceptive phase | No | 262 | 91.3 | Yes | 25 | 8.7 |
| Year debonded | 2013 | 19 | 6.6 | 2014 | 110 | 38.3 | 2015 | 93 | 32.4 | 2016 | 65 | 22.6 |
| Early debond | No | 233 | 81.2 | Yes | 54 | 18.8 |
| Treatment duration | Less than 36 m | 181 | 63.1 | More than 36 m | 106 | 36.9 |
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