An evaluation of hearing preservation outcomes in routine cochlear implant care: Implications for candidacy

Figures & data

Figure 1 Unaided pure tone audiometric thresholds by air-conduction in 5 year blocks for individual ears for all cochlear implant candidates referred to the University of Southampton Auditory Implant Service who were subsequently implanted.

Table 1 Number and percentage of individual ears meeting two different EAS candidacy criteria among in 5 year blocks for all cochlear implant candidates referred to the University of Southampton Auditory Implant Service who were subsequently implanted

Year cohort	Total number in year cohort	Number of those with thresholds ≤ 80 at 250 and 500 Hz	Number of those with thresholds ≤ 65 at 250 and 500 Hz	Percentage of those with thresholds ≤ 80 at 250 and 500 Hz	Percentage of those with thresholds ≤ 65 at 250 and 500 Hz
1990–95	55	0	0	0.0	0.0
1996–2000	65	4	1	6.2	1.5
2001–2005	143	7	3	4.9	2.1
2006–2010	332	42	25	12.7	7.5
2011–2015	346	65	30	18.8	8.7

Figure 2 Last available pre-operative and post-operative pure tone audiometric thresholds for cochlear implant recipients at the University of Southampton Auditory Implant Service with at least one post-operative unaided pure tone audiogram.