Table 3.

Confounding analysis and VR dosage distribution.

(A) Potential confounding variables:
Variable	Correlation with VR sessions		p-value	Clinical interpretation
Hospital length of stay	r = 0.664		p = 0.002	Strong confounder
Age	r = −0.18		p = 0.46	Minimal confounding
Days to VR initiation	r = 0.31		p = 0.20	Moderate confounding
(B) VR session distribution (showing “scattered range”):
Sessions	n (%)	Cumulative %	Mean USEQ ± SD	High satisfaction*
1	6 (31.6%)	31.6%	24.2 ± 8.1	4/6 (66.7%)
2	5 (26.3%)	57.9%	23.8 ± 7.2	3/5 (60.0%)
3–5	2 (10.5%)	68.4%	21.0 ± 4.2	1/2 (50.0%)
6–10	4 (21.1%)	89.5%	27.5 ± 3.1	3/4 (75.0%)
11–13	2 (10.5%)	100%	26.0 ± 0.0	2/2 (100%)

^*High satisfaction = USEQ ≥25 points.