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Fig. 2 | The Journal of Headache and Pain

Fig. 2

From: Cervical non-invasive vagus nerve stimulation (nVNS) for preventive and acute treatment of episodic and chronic migraine and migraine-associated sleep disturbance: preliminary findings from a prospective observational cohort study

Fig. 2

Pain intensity (median [IQR]). Abbreviations: CM chronic migraine, EM episodic migraine, IQR interquartile range, nVNS non-invasive vagus nerve stimulation, VAS visual analogue scale. Pain intensity (VAS) scores at baseline (blue bars) and after 3 months of treatment with nVNS (orange bars) in all patients, patients with EM, and patients with CM. Data are shown as median (IQR); whiskers indicate the minimum and maximum values

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The Journal of Headache and Pain

ISSN: 1129-2377

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