Table 1.

Demographical data and clinical characteristics of the sample.

Gender	43 males, 12 females
Age (years)	52.49 ± 11.42
Tinnitus duration (years)*	7.94 ± 7.15
Tinnitus laterality	5 right
	8 left
	12 both ears worse left
	8 both ears worse right
	19 both ears equally
	3 inside the head
Intertreatment interval (months)	20.65 ± 18.56
Identical treatment protocol for both treatment courses	30 yes, 25 no
TQ difference 1	−4.45 ± 10.13
TQ difference 2	−4.47 ± 8.23
TQ difference intertreatment interval	4.91 ± 14.42

Data are given as mean ± standard deviation.

^*Before starting of first treatment course.