Table 2. Changes in State-Trait Anxiety Inventory Scores Between Groups at Different Survey Points.

Comparison	AR		Control		P value
	No.	Score difference, mean (SD) [95% CI]	No.	Score difference, mean (SD) [95% CI]
Screening vs postintervention survey	36	−3.1 (5.7) [−5.0 to −1.1]	37	0.1 (3.7) [−1.2 to 1.3]	.01
Screening vs preoperative survey	46	−2.4 (7.3) [−4.6 to −0.3]	49	2.6 (8.4) [0.2 to 4.9]	.01
Screening vs postoperative survey	44	−5.4 (8.3) [−7.9 to −2.9]	45	−6.9 (15.6) [−11.5 to −2.2]	.27
Preoperative vs postoperative survey	44	−8.0 (7.6) [−10.3 to −5.7]	45	−4.2 (14.8) [−8.6 to 0.2]	.19

Abbreviation: AR, augmented reality.