TABLE 4.

Pre-test post-test difference for VAS-S in experimental (VAT) and control (placebo) group (VAS-S, visual analogue scale for stress; PRE, pre-test; POST, post-test; VAT, vibroacoustic therapy; PLA: placebo).

Test	Mean	Standard deviation	t	P
PRE-VAT	3.538	2.024	4.723	<0.001
POST-VAT	1.581	1.965
PRE-PLA	2.929	2.142	4.798	<0.001
POST-PLA	1.154	1.191