Observational Study
Copyright ©The Author(s) 2021.
World J Radiol. Feb 28, 2021; 13(2): 40-52
Published online Feb 28, 2021. doi: 10.4329/wjr.v13.i2.40
Table 5 Correlations between the 2-dimensional cephalometric variables and the 3-dimensional volumetric measurements of the airway

Nasal airway
Superior airway
Middle airway
Inferior airway
Total airway
Gonial angle
Pearson correlation-0.0210.1350.098-0.0190.024
Sig.(2-tailed)0.9280.5710.6810.9370.918
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AFH
Pearson correlation0.0550.2010.0570.3420.154
Sig.(2-tailed)0.8180.3950.8110.140.517
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PFH
Pearson correlation0.1590.1720.1240.3190.23
Sig.(2-tailed)0.5030.470.6020.1710.329
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PFH/AFH, %
Pearson correlation0.1330.0570.0860.1130.142
Sig.(2-tailed)0.5760.8130.7170.6360.55
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FMA
Pearson correlation-0.372-0.314-0.377-0.411-0.473a
Sig.(2-tailed)0.1060.1780.1020.0720.035
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ANB
Pearson correlation-0.364-0.408-0.197-0.152-0.389
Sig.(2-tailed)0.1150.034a0.4050.5220.22a
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Mand-BL
Pearson correlation0.1360.523a0.0380.1840.225
Sig.(2-tailed)0.5670.0180.8740.4360.341
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Facial convexity
Pearson correlation-0.362-0.306-0.221-0.22-0.391
Sig.(2-tailed)0.1160.1890.3490.3510.088
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Co-pt A
Pearson correlation0.1270.3240.2890.469a0.3
Sig.(2-tailed)0.5940.1630.2170.0370.199
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Co-pt GN
Pearson correlation0.3010.2960.0120.2250.303
Sig.(2-tailed)0.1970.2040.9590.340.194
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