TABLE 3.

Results of the TMT-B&W test, CES-D depression scale represented with scores, and cortisol levels before and after the intervention.

Neuropsychological and stress assessment		20 Hz tVAS	40 Hz tVAS	p-value
Time-to-completion on the TMT-B&W-A (s)	Baseline	45.09 ± 4.51	36.25 ± 2.83
	Week 8	38.73 ± 4.16	33.67 ± 3.05
	Change from baseline	−6.36 ± 4.36	−2.58 ± 3.32	0.486a
	p-valuec	0.581	0.434
Time-to-completion on the TMT-B&W-B (s)	Baseline	144.45 ± 14.37	112.67 ± 9.25
	Week 8	137.27 ± 14.67	120.25 ± 9.25
	Change from baseline	−7.18 ± 4.44	7.58 ± 7.84	0.316a
	p-valuec	0.581	0.334
CES-D	Baseline	12.36 ± 2.24	10.33 ± 1.36
	Week 8	9.00 ± 2.66	6.92 ± 1.87
	Change from baseline	−3.36 ± 1.79	−3.42 ± 1.51	0.951b
	p-valuec	0.090	0.045*
Cortisol (μg/dL)	Baseline	0.164 ± 0.034	0.150 ± 0.036
	Week 8	0.168 ± 0.033	0.134 ± 0.019
	Change from baseline	0.005 ± 0.037	−0.016 ± 0.032	0.468b
	p-valuec	0.906	0.624

^aObtained from an independent t-test.

^bObtained from a Mann–Whitney U test.

^cObtained from a paired t-test.

*p < 0.05;

**p < 0.01.