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Table 5 Multiple linear regression analysis between the surrounding structures and airway changes

From: Quantitative changes of upper airway in class III patients undergoing bimaxillary surgery after one-year follow-up: a retrospective study

Y

Variables(Δ = Pre-Post)

Linear regression coefficient

P

Multivariate ANOVA

R2

Nasopharynx airway volume

PNS horizontal movement

626.9

0.001

0.001 **

0.424

PNS vertical movement

−392.2

0.003

Constant

− 1040.2

0.158

Nasopharynx airway volume

percentage

PNS horizontal movement

0.059

0.005

0.002 **

0.367

PNS vertical movement

−0.042

0.005

Constant

−0.077

0.342

Retropalatal airway

volume

Soft palate angle

204.9

0.003

0.000***

0.518

B sagittal movements

−314.6

0.022

constant

1710.7

0.029

Retropalatal airway

volume

percentage

Soft palate angle

0.014

0.006

0.000***

0.477

B sagittal movements

−0.021

0.034

constant

0.118

0.036

Retroglossal airway volume

B sagittal movements

−656.6

0.000

0.000***

0.491

Tongue horizontal length

356.4

0.004

Constant

992.6

0.271

Retroglossal airway volume

percentage

B sagittal movements

−0.046

0.005

0.007**

0.306

Tongue horizontal length

−0.072

0.022

Constant

0.143

0.349

  1. * p < 0.05, **p < 0.01, ***p < 0.001