Table 1.

Subject demographic information including age at testing, years of CI experience, device type, processor, insertion depth, long or short electrode, postoperative low-frequency pure tone average (LF PTA) in dB HL in the CI ear, degree of hearing loss (dB) for the LF PTA in the CI ear (as a result of surgery), interaural asymmetry (in dB) in unaided audiometric thresholds across ears (CI ear–non-CI ear), degree of hearing preservation (HP) related benefit in the SRT (dB) as reported in Gifford et al. (2013). The mean values for interaural asymmetry, in dB, are shown for 125, 250 and 500 Hz. Interaural asymmetry was calculated as CI ear–non-CI ear. Thus a negative value indicates that the threshold in the CI ear was lower (i.e. better) than the non-CI ear.

Subject	Age	Years CI experience	Device	Processor	Insertion depth (mm)	Postop LF PTA (dB HL) in CI ear	Hearing loss (dB) in LF PTA	Interaural asymmetry for 125, 250 and 500 Hz (CI ear)–(non-CI ear)	Hearing preservation (HP) benefit in SRT (dB)
1	54	1.4	Nucleus CI512	CP810	18	28.3	50.0	50, 55, 70	1.6
2	58	7.4	Nucleus CI24RCA	CP810	18	42.5	20.8	10, 15, 20	4.0
3	46	5.9	Nucleus Hybrid S8	Hybrid SP	10	23.3	60.0	35, 40, 35	−0.7
4	76	0.6	MED-EL Sonata H	Opus2	31	78.3	5.0	5, 15, 30	1.0
5	61	1.7	MED-EL Sonata H	Opus2	31	46.7	10.0	−20, −15, −10	2.0
6	67	0.8	MED-EL FLEX24	Opus2	24	41.7	18.3	10, 15, 25	3.7
7	69	4.8	MED-EL FLEX 24	Opus2	24	42.5	9.2	−5, 10, 15	0.3
8	54	6.7	Nucleus Hybrid S8	Hybrid SP	10	33.3	0.0	10, 10, 0	5.0
9	62	6.2	Nucleus Hybrid S8	Hybrid SP	10	26.7	10.0	0, 5, 25	2.3
10	80	2.2	Nucleus Hybrid L24	Hybrid SP	16	16.7	16.7	5, 5, 10	4.0
11	48	2.8	Nucleus Hybrid L24	Hybrid SP	16	51.7	13.3	−20, −10, −20	3.3
12	46	2.4	Nucleus Hybrid L24	Hybrid SP	16	28.3	7.2	10, 15, 25	2.3
13	44	2.1	Nucleus Hybrid S12	Hybrid SP	10	31.7	5.0	5, 5, 5	2.0
14	54	4.4	Nucleus CI24RE (CA)	CP810	18	30.0	6.7	20, 20, 20	3.3
MEAN	58.5	3.5	N/A	N/A	18.0	34.5	19.3	14.6, 16.8, 22.1	2.4
STDEV	11.3	2.3	N/A	N/A	7.2	15.9	19.7	13.7, 14.1, 16.8	1.6