Table 1.

Compliance of returned Cefaly^® devices after the rental period

Total time of use (min)	Number of patients (% out of the 1077 patients)
0	48 (4.46%)
1 to 20	58 (5.39%)
21 to 40	46 (4.27%)
41 to 60	53 (4.92%)
61 to 100	78 (7.24%)
101 to 200	174 (16.16%)
201 to 400	189 (17.55%)
>400	431 (40.02%)

Reproduced from [17]: Magis D, Sava S, d’Elia TS, Baschi R, Schoenen. Safety and patients’ satisfaction of transcutaneous supraorbital neurostimulation (tSNS) with the Cefaly^® device in headache treatment: a survey of 2313 headache sufferers in the general population. J Headache Pain. 2013;14:95. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0)