Table 2.
No Virtual Reality | Virtual Reality | Difference (confidence interval) | P Value (between) | |
---|---|---|---|---|
n | 37 (52.9%) | 33 (47.1%) | ||
Absolute mYPAS Score | ||||
mYPAS T1 | 33.3 [28.3, 41.7] | 28.3 [23.3, 33.3] | 5.0 (0.3–9.7) | 0.03 |
mYPAS T2 | 45.0 [33.3, 56.7] | 28.3 [23.3, 33.3] | 16.7 (6.0–27.4) | 0.0005 |
Change in mYPAS Score | ||||
mYPAS T1-T0 | 5.0 [0.0, 10.0] | 0.0 [0.0, 0.0] | 5.0 (2.0–8.0) | < 0.0001 |
mYPAS T2-T0 | 13.3 [5.0, 26.7] | 0.0 [0.0, 5.0] | 13.3 (3.7–23.0) | < 0.0001 |
Data are n (%), median [interquartile range], or difference in median (confidence interval).
Univariate comparisons and p values were calculated using Wilcoxon rank sum.
Differences are the differences in median values with confidence intervals calculated by bootstrapping; confidence intervals for absolute mYPAS scores are 95%, and those for changes in mYPAS scores are 97.5% to compensate for multiple comparison.
Abbreviations: mYPAS, Modified Yale Preoperative Anxiety Scale, scored 23.3–100; T0 is the baseline time point in the preoperative holding area; T1 is the time point on entering the operating room; T2 is the time point on induction of general anesthesia; T1-T0 is the difference between T1 and T0; T2-T0 is the difference between T2 and T0.