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Fig. 1 | The Journal of Headache and Pain

Fig. 1

From: Safety and efficacy of deep brain stimulation in refractory cluster headache: a randomized placebo-controlled double-blind trial followed by a 1-year open extension

Fig. 1

Design of the study. The randomized phase of the study included two 1-month treatment periods (week 8 to week 12 and week 13 to week 17) separated by a 1-week washout period. Patients were evaluated at inclusion, 1 week before surgery; 4 weeks after surgery (before active or sham stimulation) and at the end of the first randomization period (weeks 12 and 17). This randomized phase was followed by a 10-month open phase. Patients were evaluated at the end of this phase (week 52)

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The Journal of Headache and Pain

ISSN: 1129-2377

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