Table 3.

Mean Displacements and Variance

	MEAN		T- test Welch		Variance ANOVA test
	TMP	VCS	Value	p-value	ratio (TMP/VCS)	p-value
Session 1	0.64	1.05	−3.91	0.0002	0.4007	0.0081
Session 2	0.49	1.02	−4.49	<0.0001	0.5921	0.1508
Session 3	0.56	0.97	−3.41	0.0011	0.3631	0.0075

Abbreviation: TMP Thermoplastic Mask, VCS Vacuum cushion system