Table 2.

Speech perception test results of adult CI recipients, and comparison of post-CI ES test, DS test, and PB word recognition test scores

Result	N	Maximum	Minimum	Median	Mean ± SD	p	Good, %	Fair, %	Poor, %
Pre-CI
ES	30	96	0	11	22.5 ± 26.8
DS	30	98	0	12	23.3 ± 28.2
PB	30	56	0	4	9.9 ± 14.7
Post-CI, 1 month
ES	30	100	18	89	79.9 ± 21.9
DS	30	100	18	87	77.4 ± 23.2
PB	30	92	0	40	40.8 ± 25.0
Post-CI, 3 months
ES	30	100	0	95	85.9 ± 24.3
DS	30	100	0	92	80.5 ± 26.5
PB	30	88	0	52	51.6 ± 26.3
Post-CI, 6 months
ES	30	100	2	96	86.7 ± 22.1
DS	30	100	2	94	82.2 ± 24.1
PB	30	92	4	48	53.6 ± 22.9
Post-CI, 12 months
ES	30	100	8	100	90.2 ± 24.6
DS	30	100	12	98	88.9 ± 23.5
PB	30	100	0	60	57.4 ± 26.5
Last three scores, Quiet
ES	116	100	0	95	81.0 ± 27.7
DS	116	100	0	91	77.5 ± 28.5
PB	116	100	0	60	55.0 ± 28.5
Last three scores, SNR+5
ES	55	100	26	86	81.0 ± 18.8
DS	55	100	2	80	77.0 ± 19.3
PB	55	92	0	48	47.9 ± 23.1
Post-CI 1 month versus 3 months
ES						0.005
DS						0.001
PB						0.004
Post-CI 3 months versus 6 months
ES						0.118
DS						0.789
PB						0.843
Outcome
ES	116						71%	12%	17%

Last three scores, last time to evaluate ES, DS, and PB at least post-CI 12 months follow-up; Quiet, in quiet environment; SNR+5, in the environment of signal to noise ratio plus 5dB; Good, score > 80; Fair, score 50-80; Poor, score < 50; p < 0.05 are shown in bold.

CI = cochlear implant; DS = difficult sentence perception test; ES = easy sentence perception test; N = number; PB = phonetically-balanced word recognition test; SD = standard deviation.