7=Strongly Agree). Subjects used each feature in a
simulated sound environment before completing the
questionnaire.
During the chronic phase of the study, the same ques-
tionnaire format was used to evaluate subjective experi-
ence with each feature. Responses were based upon
subjects' use of the programs in their everyday listening
environments
Acute questionnaires indicated that all individual fea-
tures were acceptable by all subjects (18/18, 100%).
Tables 4-6 list the median ratings for each feature
from the questionnaires administered during both the
acute and chronic phases of the study. Acute ratings
were generally favorable for a majority of subjects with
median values of 6 or 7 for all questions. The lowest
acute response for any feature was a value of 3. Chronic
ratings generally were a lower and more variable but
most of the ratings had median values in the positive
agreement range. This variability was an anticipated
outcome given the randomized, cross-over blinded
study design during the chronic phase. Tables 7-10 list
the minimum, maximum, and median values for the two
groups (A and B) on each subjective comfort question.
Table 10 reports the overall acceptability rating for the
combined feature program and EchoBlock for each group.
Overall acceptability shows that there was no added
benefit from the combined features compared to the auto
UltraZoom alone (Table 10).
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