Table 4 Multivariate linear regression analysis results
Variable | β (95% CI) | t | P value |
|---|---|---|---|
Pre-treatment CoS | 0.265 (0.041, 0.489) | 2.376 | 0.022* |
Predicted CoS | 0.749 (0.376, 1.121) | 4.045 | < 0.001* |
Age | 0.027 (-0.004, 0.058) | 1.756 | 0.086 |
Initial crowding | -0.091 (-0.174, -0.009) | -2.227 | 0.031* |
Gender | |||
Male | 0.327 (-0.178, 0.831) | 1.304 | 0.199 |
Female | Reference | / | / |
Intermaxillary elastics | |||
Class II | 0.668 (0.146, 1.190) | 2.576 | 0.013* |
Class III | -0.330 (-1.865, 1.205) | -0.432 | 0.667 |
None | Reference | / | / |
Bite ramps | |||
Yes | 0.429 (-0.640, 1.497) | 0.807 | 0.424 |
No | Reference | / | / |
L3 attachment | |||
Rectangle | -0.140 (-0.717, 0.437) | -0.489 | 0.627 |
Optimized | Reference | / | / |
L5 attachment | |||
Rectangle | 0.253 (-0.385, 0.891) | 0.799 | 0.429 |
Optimized | Reference | / | / |
L6 attachment | |||
Rectangle | -0.329 (-1.024, 0.366) | -0.952 | 0.346 |
Optimized | Reference | / | / |
L7 attachment | |||
Rectangle | -0.335 (-0.983, 0.313) | -1.041 | 0.303 |
Optimized | Reference | / | / |