Table 1.

Patient characteristics and in the rightmost 3 columns the effect of single-electrode stimulation

Patient number	Male/female	Age, years	Aetiology of hearing loss	THI	THQ	Implant type	Overall anamnestic effect of CI on tinnitus	Tinnitus reductiona	No effecta	Tinnitus increasea
1	Female	62	Unknown	12	26	Cochlear	No effect	4	5	1
2	Male	74	Otosclerosis	33	20	Cochlear	No effect	0	8	0
3	Male	78	Unknown	46	85	Cochlear	Reduction	0	12	0
4	Male	53	Congenital	60	68	Cochlear	Reduction	3	9	0
5	Male	69	Unknown	30	53	Advanced bionics	Reduction	10	2	0
6	Male	59	Unknown	22	14	Cochlear	Reduction	1	10	1
7	Male	70	Unknown	0	6	Advanced bionics	No effect	0	12	0
8	Female	46	Meniere's disease	46	76	Cochlear	Reduction	8	4	0
9	Female	65	Otosclerosis	0	22	Cochlear	Increase	1	2	9
10	Male	64	Familiar	36	41	Cochlear	Increase	0	12	0
11	Female	69	Familiar	40	61	Advanced bionics	Increase	9	0	3
12	Male	47	Meningitis	0	0	Cochlear	Reduction	2	7	3
13	Female	45	Unknown	22	26	Cochlear	Increase	0	10	2
14	Male	43	Otosclerosis	42	57	Cochlear	No effect	1	11	0
15	Male	68	Skull base fracture	12	37	Advanced bionics	No effect	6	6	0
16	Female	59	Otitis	68	59	Cochlear	No effect	3	9	0
17	Male	57	ISSHL	4	11	Cochlear	No effect	0	12	0
18	Female	69	Unknown	0	0	Cochlear	Onset	4	2	6
19	Male	55	Unknown	66	71	Cochlear	No effect	2	3	7
Mean		60.6		28.4	38.6			2.8	7.2	1.7
Range		43–78		0–68	0–85			0–10	0–12	0–9

Patients 1 and 2 did not complete the entire experiment. THI, Tinnitus Handicap Inventory; THQ, Tinnitus Handicap Questionnaire; CI, cochlear implant.

^aNumber of conditions with the indicated effect of single-electrode stimulation.