Cone beam computed tomographic evaluation of pharyngeal airway in North Indian children with different skeletal patterns

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	-0.021	0.135	0.098	-0.019	0.024
Sig.(2-tailed)	0.928	0.571	0.681	0.937	0.918
n	120	120	120	120	120
AFH
Pearson correlation	0.055	0.201	0.057	0.342	0.154
Sig.(2-tailed)	0.818	0.395	0.811	0.14	0.517
n	120	120	120	120	120
PFH
Pearson correlation	0.159	0.172	0.124	0.319	0.23
Sig.(2-tailed)	0.503	0.47	0.602	0.171	0.329
n	120	120	120	120	120
PFH/AFH, %
Pearson correlation	0.133	0.057	0.086	0.113	0.142
Sig.(2-tailed)	0.576	0.813	0.717	0.636	0.55
n	120	120	120	120	120
FMA
Pearson correlation	-0.372	-0.314	-0.377	-0.411	-0.473a
Sig.(2-tailed)	0.106	0.178	0.102	0.072	0.035
n	120	120	120	120	120
ANB
Pearson correlation	-0.364	-0.408	-0.197	-0.152	-0.389
Sig.(2-tailed)	0.115	0.034a	0.405	0.522	0.22a
n	120	120	120	120	120
Mand-BL
Pearson correlation	0.136	0.523a	0.038	0.184	0.225
Sig.(2-tailed)	0.567	0.018	0.874	0.436	0.341
n	120	120	120	120	120
Facial convexity
Pearson correlation	-0.362	-0.306	-0.221	-0.22	-0.391
Sig.(2-tailed)	0.116	0.189	0.349	0.351	0.088
n	120	120	120	120	120
Co-pt A
Pearson correlation	0.127	0.324	0.289	0.469a	0.3
Sig.(2-tailed)	0.594	0.163	0.217	0.037	0.199
n	120	120	120	120	120
Co-pt GN
Pearson correlation	0.301	0.296	0.012	0.225	0.303
Sig.(2-tailed)	0.197	0.204	0.959	0.34	0.194
n	120	120	120	120	120

^aCorrelation is significant at 0.05 level. AFH: Anterior facial height.

PFH: Posterior facial height; FMA: Frankfurt Mandibular Plane Angle; Co-PtA: Condylion to point; GN: Gnathion; ANB: The angle formed between point A, Nasion and point B; Mand-BL: Mandibular body length.