Table 1.
Patients: number (n), age, gender, average wearing time of the RME, average number of hyrax screw activations, crossbite and mandibular deviation for the total patient group (all patients) and the patient groups PG 1, PG 2 and PG 3
| Patients | All patients | PG 1 | PG2 | PG 3 | |
|---|---|---|---|---|---|
| Number (n) | n | 60 | 20 | 20 | 20 |
| Age (years) | (M ± SD) | 11.33 ± 2.60 | 8.57 ± 0.81 | 10.94 ± 0.63 | 14.43± 1.41 |
| Gender (m/f) | n | 24 / 36 | 9 / 11 | 4 / 16 | 11 / 9 |
| RME wearing time (months) | (M ± SD) | 6.13 ± 1.50 | 6.06 ± 1.69 | 6.26 ± 1.25 | 6.07 ± 1.60 |
| Number of hyrax screw activations | n | 25.15 ± 5.37 | 25.10 ± 6.4 | 25.20 ± 5.0 | 25.15 ± 4.83 |
|
Crossbite On both sides/only right/only left |
n |
60 29/21/10 |
20 9/8/3 |
20 10/5/5 |
20 10/8/2 |
|
Mandibular deviation None/right/left |
n | 33/19/8 | 9/8/3 | 12/5/3 | 12/6/2 |
Mean (M) and standard deviation (SD)