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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