Table 5.

The statistical comparisons and effect sizes of symptom reduction from baseline.

	Day 5		2-month follow-up
Outcome\treatment	tACS	Sham	tACS	Sham
AHRS	t13 = 0.416	t10 = −0.089	t13 = −1.68	t10 = −0.792
	p = 0.658	p = 0.465	p = 0.058†	p = 0.223
	d = 0.111	d = −0.026	i = −0.450	i = −0.239
HPSVQ	t13 = −0.28	i10 = −1.69	t13 = −1.16	t10 = −2.08
	p = 0.390	p = 0.060†	p = 0.134	p = 0.032*
	d = −0.076	d = −0.511	d = −0.309	d = −0.628
PANSS
–total	t13 = −1.87	t10 = −0.451	t13 = −1.18	t10 = −2.43
	p = 0.042*	p = 0.331	p = 0.130	p = 0.018*
	d = −0.499	d = −0.136	d = −0.314	d = −0.734
–Positive symptoms	t13 = −1.06	t10 = −0.396	t13 = −1.11	t10 = −2.14
	p = 0.155	p = 0.350	p = 0.143	p = 0.029*
	d = −0.283	d = −0.120	d = −0.297	d = −0.645
–Negative symptoms	t13 = 0	t10 = 0.1	t13 = 0.764	t10 = −1.69
	p = 0.5	p = 0.539	p = 0.771	p = 0.060†
	d = 0	d = 0.030	d = 0.204	d = −0.512
–General psychopathology	t13 = −2.58	t10 = −0.470	t13 = −1.98	t10 = −1.87
	p = 0.011*	p = 0.324	p = 0.034*	p = 0.046*
	d = −0.690	d = −0.142	d = −0.530	d = −0.563
–Hallucinations	t13 = 0	t10 = −0.559	t13 = −1.38	t10 = −1
	p = 0.5	p = 0.294	p = 0.095†	p = 0.170
	d = 0	d = −0.169	d = −0.370	d = −0.302

Statistical results shown are based on paired t tests of the decrease of symptom scores from baseline at the end of the treatment week (Day 5) and the end of the maintenance period (2-month follow-up) for participants who received 5-day tACS or sham stimulation during the treatment week. Bold: statistically significant results. P-values were computed using left-tail paired t tests. (*p < 0.05. ^†p < 0.10).