Table 2.

Test-retest reliability.

	Amplitude		Max cranial		Max caudal		Displacement
	ICC	p	ICC	p	ICC	p	ICC	p
C2	0.855	0.008	0.822	0.016	0.867	0.006	0.815	0.001
C3	0.868	0.007	0.838	0.012	0.877	0.006	0.858	0.002
C4	0.866	0.011	0.873	0.009	0.839	0.018	0.852	0.010
C5	0.946	0.001	0.908	0.002	0.879	0.008	0.968	0.000
C6	0.756	0.038	0.586	0.103	0.856	0.013	0.781	0.009
C7	0.678	0.117	0.604	0.124	0.220	0.384	0.604	0.134

For test-retest reliability intraclass correlation coefficients (two-way mixed model, absolute agreement, average measures) between two measurements were calculated for corrected velocity values in each cervical segment for amplitude, maximum cranial and caudal velocity and for the displacement.

max = maximum, ICC = intraclass correlation coefficient.