Statistical Analysis
All analyses used the intention-to-treat population. For the analysis of paretic side, only right-handed participants were included as the majority of participants were right hand dominant (48/53 [90.6%] in the VNS group and 50/55 [91%] in the control group). We calculated the mean difference and 95% CI for the FMA-UE and WMFT and the difference in response rates between active VNS and sham stimulation in the entire population and then by subgroup. We then assessed whether there was any interaction between subgroup factor and the mean difference in FMA-UE score at day 90 using a two-way ANOVA model including treatment and subgroup as factors. A 