Table 1 Clinical characterization of patients
Characteristics | N (%) | %OIEARRmax 95%CI |
|---|---|---|
Gender* | ||
Female | 123 (63.1) | 14.6–17.6 |
Male | 72 (36.9) | 18.4–23.3 |
Age (years) | ||
< 14 | 63 (32.3) | 14.7–18.6 |
14–18 | 85 (43.6) | 16.2–20.7 |
> 18 | 47 (24.1) | 15.6–21.4 |
Months of treatment* (Mean 35.6; s.d.10.1) | ||
< 30 (1st tertile) | 57 (29.2) | 12.1–16.0 |
30–39 | 68 (34.9) | 14.8–19.2 |
> 39 (2nd tertile) | 70 (35.9) | 19.5–24.3 |
Overjet (mm) (Mean 4.2; s.d.5.4) | ||
< 2 mm | 43 (22.1) | 16.7–23.1 |
2–3 mm | 63 (32.3) | 14.4–18.6 |
> 3 mm | 89 (45.6) | 15.9–19.9 |
Anterior open bite | ||
With | 28 (14.4) | 18.1–25.9 |
Without | 167 (85.6) | 15.8–18.6 |
Premolar extraction* | ||
With | 58 (29.7) | 19.0–23.6 |
Without | 137 (70.3) | 14.8–18.0 |
Tongue thrust | ||
With | 58 (29.7) | 16.4–21.5 |
Without | 137 (70.3) | 15.9–19.0 |
Angle classification [59] | ||
Class I | 99(50.8) | 14.9–18.5 |
Class II | 79(40.5) | 16.8–21.1 |
Class III | 17(8.7) | 14.1–25.8 |