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Box and Whisker plots showing outcome from DBS measured as percentage change in BFMDRS-motor score at 1 year after surgery in relation to CMCT result. (A) Results for the whole group (B–E) sub-group analyses for (B) Idiopathic/Genetic dystonia, (C) Acquired dystonia, (D) Normal cranial MRI, (E) Abnormal cranial MRI. The p-values are calculated using Mann-Whitney tests. Note different scales for C and E as improvements are generally smaller in these groups.
