Progress in Orthodontics

Table 5 A correlation matrix for the seven parameters calculated with the Karl Pearson correlation test

From: Cephalometric study to test the reliability of anteroposterior skeletal discrepancy indicators using the twin block appliance

	ANB angle		Wits appraisal	β angle	APDI	App-Bpp	YEN angle	W angle
ANB angle	Pearson correlation (r)		0.563	−0.527	−0.420	0.530	−0.445	−0.613
	Significance (two-tailed) (p)		0.003*	0.007*	0.037*	0.006*	0.026*	0.001*
	n			25	25	25	25	25
Wits appraisal	Pearson correlation (r)			−0.552	−0.185	0.475	−0.217	−0.383
	Significance (two-tailed) (p)			0.004*	0.377	0.016*	0.297	0.059
	n				25	25	25	25
β angle	Pearson correlation (r)				0.455	−0.441	0.328	0.424
	Significance (two-tailed) (p)				0.022*	0.027*	0.110	0.035*
	n					25	25	25
APDI	Pearson correlation (r)					−0.552	0.593	0.591
	Significance (two-tailed) (p)					0.004*	0.002*	0.002*
	n						25	25
App-Bpp	Pearson correlation (r)						−0.548	−0.655
	Significance (two-tailed) (p)						0.005*	0.0004*
	n							25
YEN angle	Pearson correlation (r)							0.894
	Significance (two-tailed) (p)							<0.0001*
	n							25
W angle	Pearson correlation (r)
	Significance (two-tailed) (p)
	n

*p ≤ 0.05 = significant.

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