TABLE 1.

Individual demographic information for participants who use a cochlear implant (CI) or a hearing aid (HA).

Participant	Months of CI Experience	Age at Testing (Mo)	Age Loss First Noted by Parenis (Mo)	Age at CI Hookup (Mo)	Etiology	Encoding Strategy	Number of Electrodes
CI1	35	67	9	31	Meningitis	Mpeak	21
CI2	36	93	14*	57	Unknown	Mpeak	20
CI3	48	106	12*	58	Unknown	F0F1F2	22
CI4	36	96	30	60	Meningitis	Mpeak	11
CI5	43	99	12	51	Meningitis	Mpeak	22
CI6	60	103	11*	46	Unknown	Mpeak	22
CI7	60	117	6*	57	Unknown	F0F1F2	22
CI8	72	119	8*	47	Unknown	F0F1F2	19
CI9	60	125	3*	65	Unknown	Mpeak	20
CI10	36	152	8*	116	Unknown	Mpeak	20
CI11	72	161	4*	89	Unknown	Mpeak	20
CI12	24	154	15	130	Meningitis	Mpeak	22
CI13	35	194	18*	158	Hereditary	Mpeak	19
CI14	24	86	12	62	Meningitis	Mpeak	22
CI15	36	79	14*	43	CMV	Mpeak	22
CI16	36	98	11*	62	Meningitis	Mpeak	22
CI17	48	106	16*	58	Unknown	Mpeak	21
CI18	36	169	1*	133	Hereditary	Mpeak	20
CI19	36	149	26	113	Meningitis	Mpeak	20
CI20	36	86	9	50	Meningitis	Mpeak	20
CI21	24	87	18*	63	Unknown	Mpeak	22
CI22	48	117	9*	69	Unknown	Mpeak	21
CI23	36	90	5*	54	Unknown	Mpeak	22
CI24	48	99	14*	51	Unknown	Mpeak	22
CI25	24	63	7*	39	Unknown	Mpeak	22
Mean	43	9 yr 5 mo	12	70
SD	14	2 yr 7 mo	7	33
HA1	NA	136	6*	NA	Unknown
HA2	NA	114	9*	NA	Unknown
HA3	NA	97	9	NA	Ototoxicity
HA4	NA	118	8*	NA	Unknown
HA5	NA	81	3*	NA	Hereditary
HA6	NA	81	6*	NA	Unknown
HA7	NA	84	8*	NA	Unknown
HA8	NA	129	6*	NA	Unknown
HA9	NA	149	9*	NA	Unknown
HA10	NA	171	16*	NA	Unknown
HA11	NA	167	3*	NA	Premature birth
HA12	NA	171	8*	NA	Meningitis
HA13	NA	171	6*	NA	Unknown
Mean		10 yr 2 mo	7
SD		2 yr 9 mo	3

^*Suspected congenitel onset.