. 2018 Dec 27;19:379. doi: 10.1186/s12882-018-1134-8

Table 4.

EEG and type of brain waves of hemodialysis patients before and after in treatments cycles

time	EEG	First Period				Second Period
		A^a		B		A^a		B
		Number	Percent	Number	Percent	Number	Percent	Number	Percent
Before intervention	Normal (Alpha, Beta)	3	42.9	1	12.5	4	57.1	3	42.9
Before intervention	Mild (Theta)	4	57.1	7	87.5	3	42.9	4	57.1
After intervention	Normal (Alpha, Beta)	4	57.1	3	42.9	4	66.7	3	100
After intervention	Mild (Theta)	3	42.9	4	57.1	2	33.3	–	–

^aThe group A took valerian capsules in the first therapeutic period of one month and placebo in the second therapeutic period of one month, and vice versa in group B