'I will be very interested to see if the drop-out rate is similar in both arms, or predominantly in one arm. If roughly equal I would tend to regard the drop-out rate as representing the degree of difficulty in getting the subject to wear the device. The new design would hopefully produce an improvement here.'
At the end of the abstract it says 34 people completed the trial 17 in the active arm and 17 in the sham.
'I will be very interested to see if the drop-out rate is...
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