A two-way ANOVA was computed to analyze the effects of device
(six-level within-subject factor) and tolerance (four-level
within-subject factor) on the CDRR. A post-hoc analysis aimed to
investigate the effects of device and tolerance on CDRR after
merging CDRR in two separate groups, one including CDRR for
orthogonal orientations and another including CDRR for diagonal
orientations. The post-hoc analysis was based on a thee-way
ANOVA considering the within-subject factors device (six levels),
tolerance (four levels) and cardinal group (two levels: orthogonal,
diagonal).