Advanced Bionics Naída CI Q90 Mode D'emploi page 34

At the end of each two-week period, subjects completed
a questionnaire that assessed their subjective comfort
and acceptability of the feature(s).
In both the acute and chronic phases of the study, no
software modifications to the subjects' listening pro-
grams were required for activation and successful use of
the sound-cleaning and beamforming features.
Statistical analyses showed that sentence understanding
in quiet and in speech-spectrum noise with the
features enabled was no worse than in the baseline
conditions (non-inferiority margin of 10; WindBlock,
SoundRelax, EchoBlock, auto UltraZoom, combined
SoundRelax+WindBlock+auto UltraZoom, noninferiority
p-value < .0001; StereoZoom, non-inferiority p-value
< 0.05). A critical difference score was used to
determine whether individual subjects demonstrate
a significant change in performance between the
Baseline-Acute scores with his/her commercial owned
sound processor and Naída CI Q90 sound processor.
The value for the critical difference score is based upon
the test-retest variance on the AzBio Sentence test. One
subject (out of 18) had worse score difference between
post-fitting and baseline testing for AzBio sentence test
in noise with the combined features, however, the single
or combined features were acceptable to this subject
throughout the four-week trial period. Subjects who were
dissatisfied with the new front-end processing features
(single or combination) during the fourweek trial period
did not show worse AzBio sentence recognition scores
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