Table 2.

Comparison of ASSR energy between case group and control group

Steady state response index		Case (n=24)	Control (n=30)	t value	P value	d value
Rhythmic energy	20 Hz	0.332 (0.271)	0.330 (0.314)	0.019	0.985	0.007
	40 Hz a	0.179 (0.400)	1.380 (2.431)	-2.291	0.032 *	0.655
Phase locking factor	20 Hz	0.344 (0.167)	0.378 (0.176)	-0.676	0.502	0.198
	40 Hz	0.229 (0.233)	0.463 (0.292)	-3.017	0.004 *	0.875
ITPC	20 Hz	0.205 (0.149)	0.242 (0.163)	-0.800	0.428	0.236
	40 Hz a	0.148 (0.209)	0.404 (0.327)	-3.131	0.003 *	0.911

Note: ^aVariance was not uniform, corrected t test was used

*: P<0.05; d value is cohen’s d.