Table 4. Pearson's correlation coefficient and associated p-value relating to a 2-tailed t-test with the null hypothesis that there is no correlation between systematic moves on different axes for 50 patients.

	x–y	x–z	y–z
Pearson's correlation coefficient	−0.03	−0.01	0.53
p-valuea	0.81	0.95	<0.0001

x, lateral axis; y, craniocaudal axis; z, anteroposterior axis.

^ap<0.05 was considered to indicate statistical significance.