Table 5.

Analysis of factors associated with a greater than median maximum displacement (1. 22 mm)

Characteristic	Category	Odds ratio (95% CI)	P-value
Age	<65	Ref
	>65	0.207 (0.052-0.815)	0.024
Bite block	No	Ref
	Yes	0.075 (0.005-1.219)	0.069
Mask Type	Green	Ref
	Yellow	1.842 (0.555-6.110)	0.318
Number of Treatments	1	Ref
	>1	1.127 (0.382-3.321)	0.828
BMI	<24.9	Ref
	>24.9	0.852 (0.284-2.562)	0.776
ECOG	<1	Ref
	>1	4.936 (1.416-17.209)	0.012
Gender	Female	Ref
	Male	4.220 (1.092-16.300)	0.037
Tumor pathology	Benign	Ref
	Malignant	3.194 (0.719-14.180)	0.127
Treatment time (minutes)	<23	Ref
	>23	4.507 (1.389-12.426)	0.012
Anxiolytic use	No	Ref
	Yes	0.171 ( 0.044-0.673)	0.011
Clearance check	No	Ref
	Yes	7.778 (0.887- 68.191)	0.064

Logistic regression analysis of maximum displacement > 1.22 mm with regard to patient and treatment characteristics. ECOG >1, increased treatment time, and lack of anxiolytic use (noted in bold font) showed significant association with increased maximum displacement.