Table IV.
Coefficient of correlation and determination between variables
| Variable | n | r | P value |
|---|---|---|---|
| Diastema at T2 vs first molar expansion at T3 | 38 | 0.640 | <0.0001 |
| Diastema at T2 vs first molar expansion at T5 | 36 | 0.355 | 0.0334 |
| Diastema at T2 vs skeletal changes at T3 | 38 | 0.217 | 0.1902 |
| Screw changes vs first molar expansion at T3 | 38 | 0.936 | <0.0001 |
| Skeletal changes at T3 vs dental changes at T3 | 38 | 0.338 | 0.0381 |
| Skeletal changes at T3 vs screw changes at T3 | 38 | 0.295 | 0.0719 |
| Relapse T5-T3 vs first molar expansion at T3 | 36 | −0.265 | 0.1186 |
| Relapse T5-T3 vs skeletal expansion at T3 | 36 | −0.259 | 0.1271 |