Table 2.

Compliance in the 1,077 unsatisfied subjects

Total time of use (minutes)	Number of subjects (percentage)*
0	48 (4,46%)
1 to 20	58 (5,39%)
21 to 40	46 (4,27%)
41 to 60	53 (4,92%)
60 to 100	78 (7,24%)
100 to 200	174 (16,16%)
200 to 400	189 (17,55%)
> 400	431 (40.02%)

*Number (and percentage) of unsatisfied subjects who used the device for the time indicated in the first column i.e. 48 “unsatisfied” subjects did not switch on the device, 58 used the device between 1 and 20 minutes, 46 between 21 and 40 minutes, etc.