Table 2.

Paired statistics

		Value of measurement in SHP minus value in NHP
Cephalometric soft-tissue variables		Mean difference	SD	t	Significance (two-tailed)
Distance in mm	Subnasale to H line	−0.7378	1.0543	−6.639	p < 0.001
	Lower lip to H line	0.2922	0.7281	3.807	p < 0.001
	Inferior sulcus to H line	−0.5756	0.6935	−7.873	p < 0.001
	Lower lip to E-plane	−0.1867	0.9220	−1.921	p = 0.058
	Upper lip to E-plane	−0.7322	0.9046	−7.679	p < 0.001
	Throat length	−0.8111	7.7672	−0.991	p = 0.325
	Upper lip length	−1.1311	1.1328	−9.472	p < 0.001
	Lower lip length	1.2578	1.5295	7.802	p < 0.001
Angle in degrees	Nasolabial angle	1.0289	3.8190	2.556	p = 0.012
	Nose prominence angle	0.9556	1.2250	7.400	p < 0.001
	Soft-tissue profile angle	0.6889	1.5693	4.165	p < 0.001
	Lower face–throat angle	−5.3478	5.5912	−9.074	p < 0.001

NHP, natural head position; SD, standard deviation; SHP, supine head position.

Paired statistics of the measurements; explanation of measurements in Figures 3 and 4.