Fig. 2.

Change in Number of MM/MRM Days per Month (ITT Population)^a. Abbreviations: ITT, intention-to-treat; nVNS, non-invasive vagus nerve stimulation; SEM, standard error of the mean. ^aData are mean ± SEM; mean differences between treatment groups may not reflect calculated differences because of rounding; P values are from the t test; missing data were imputed using the last observation carried forward