The Effect of Cochlear Size on Cochlear Implantation Outcomes
Table 2
Hearing and insertion outcome measures for each group. PTA = pure tone average at 250Hz, 500Hz and 1000Hz, HINT = hearing in noise test, and CNC = consonant nucleus consonant. P-value obtained using the Mann-Whitney U test, with significant values indicated in italic. Numbers in brackets indicate standard deviations.
Flex 31
Flex 28
p-value
Preo op
PTA (dB)
69 (13.2)
72 (8.9)
0.555
Best aided CNC quiet (%)
12.3 (15.8)
30.9 (16.1)
0.0002
HINT sentence quiet (%)
36 (24.9)
45.2 (22.2)
0.218
AZBIO sentence quiet (%)
n/a
33.3 (20.6)
6 months post op
Best aided CNC quiet (%)
52.6 (22.8)
59.7 (17.9)
0.399
HINT sentence quiet (%)
83.7 (21.8)
n/a
AZBIO sentence quiet (%)
n/a
63.3 (19.99)
CNC score shift (%)
40.7 (24.1)
28.9 (17.4)
0.055
Insertion outcomes
(1) Degrees of electrode insertion on plain X-ray
489.4 degrees (82.47)
525 degrees (75.75)
0.165
(2) Number of channels inserted on plain X-ray (out of 12)
