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Fig. 1 | The Journal of Headache and Pain

Fig. 1

From: Non-invasive vagus nerve stimulation for treatment of cluster headache: early UK clinical experience

Fig. 1

CH attack frequency (a), duration (b), and severity (c) with SoC alone and with SoC + nVNS. P values are from paired t tests. Patients who had 0 attacks while using nVNS therapy were excluded from analysis of attack duration and severity. Attack severity was rated on a 0 to 10 scale, with higher scores indicating greater severity. Abbreviations: CH, cluster headache; nVNS, non-invasive vagus nerve stimulation; SD, standard deviation; SoC, standard of care

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