Table 2.

Demographic Characteristics of the CI Group

Subj. #	Age (years)	Etiology	Age at onset of deafness	Age at implantation	Implant typea	Implant manufacturerb	lPTA	rPTA
2	65	unknown	9	59	uni	AB	118	93
3	41	unknown	30	33	uni	AB	87	118
4	55	noise exposure	unknown	53	bi-sim	AB	73	72
6	63	unknown	52	57	bi-sim	AB	75	115
10	54	hereditary	1	51	hy-8	C	75	75
16	81	infection	59	69	uni	C	118	117
17	56	Meniere’s disease	39	40	uni	AB	82	77
19	59	unknown	unknown	51	hy-8	C	85	83
22	70	unknown	51 (L); 47 (R)	69	bi-sim	AB	88	87
23	66	unknown	57	59	bi-seq	AB	65	95
24	49	unknown	40	43	bi-seq	AB	102	102
29	67	noise exposure	57	63	bi-sim	AB	77	68
30	57	other	38	39	bi-seq	AB	107	90
41	42	unknown	unknown	32	hy-8	C	80	88
48	76	infection (R); unknown (L)	73	74	bi-sim	AB	113	115
72	64	unknown	unknown	63	hy-12	C	70	68
74	64	unknown	unknown	63	hy-12	C	n/a	n/a
75	74	hereditary	61	70	bi-sim	AB	92	87
76	65	otosclerosis	unknown	58	bi-seq	C	118	97
77	35	hereditary	26	26	bi-sim	AB	92	98
79	50	unknown	20	48	bi-sim	C	118	118
81	61	hereditary	55	57	bi-sim	C	107	102
82	45	unknown	32	45	hy-12	C	n/a	n/a
83	67	hereditary	53	59	bi-sim	AB	102	103
84	73	unknown	66	67	bi-sim	AB	70	63
86	44	unknown	24	26	bi-seq	AB	118	103
90	63	unknown	unknown	61	hy-12	C	n/a	n/a
94	63	unknown	unknown	61	hy-12	C	n/a	n/a
99	65	Autoimmune Sensorineural Loss	unknown	57	hy-8 (L); uni (R)	C	70	70

Notes:

^aImplant type: uni = unilateral; bi-sim = simultaneous bilateral; bi-seq = sequential bilateral; hy-12 = 10-electrode hybrid; hy-8 = 8-electrode hybrid;

^bImplant manufacturer: AB = Advanced Bionics; C = Cochlear