Table 4.

Results of Multivariable Cox Regression Models for Time to First Fixation on the Mouth in the En Face Images Comparing Appliances Pairwise^a

Group	Hazard Ratio	Conficence Interval	P Value
a (aligner) vs b (aligner + attachments)	0.80	0.61–1.05	.110
d (ceramic) vs b (aligner + attachments)	0.96	0.83–1.09	.510
e (control) vs b (aligner + attachments)	0.82	0.74–0.89	<.001
c (lingual app.) vs b (aligner + attachments)	0.82	0.77–0.88	<.001
d (ceramic) vs a (aligner)	1.11	0.84–1.45	.470
e (control) vs a (aligner)	0.80	0.70–0.91	<.001
c (lingual app.) vs a (aligner)	0.77	0.70–0.85	<.001
e (control) vs d (ceramic)	0.61	0.47–0.80	<.001
c (lingual app.) vs d (ceramic)	0.70	0.61–0.80	<.001
c (lingual app.) vs e (control)	0.73	0.55–0.96	.023

^aapp. indicates appliance.