Table 2.

Summary of translational and rotational deviations from the CBCT_posttr in both patient cohorts. Summary of absolute values are also shown.

Parameter	Translational deviations (mm)			Rotational deviations (degrees)			Time* (min)
	Vertical	Longitudinal	Lateral	Yaw	Pitch	Roll
Cohort 1 (n = 39)							8.5 ± 2.1
Mean	0.2	0.2	−0.2	0.0	0.0	0.1
SD	0.7	1.0	0.9	0.4	0.7	0.5
Mean_abs	0.5	0.7	0.6	0.3	0.4	0.4
SD_abs	0.6	0.7	0.7	0.3	0.6	0.3
Cohort 2 (n = 39)							10.7 ± 1.7
Mean	−0.2	0.1	0.0	0.0	−0.1	−0.2
SD	0.5	0.5	0.6	0.3	0.3	0.3
Mean_abs	0.2	0.2	0.3	0.2	0.3	0.3
SD_abs	0.5	0.4	0.5	0.2	0.2	0.2
p-Value**	0.051	<0.001	0.001	0.002	<0.001	0.053

*Time is between start of CBCT_setup and start of CBCT_posttr.

**Fischer exact test comparing SD for the two cohorts.