Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Adverse effects
RCT	40 people aged 14–75 years with primary segmental (16 people) or generalised dystonia (24 people) for a minimum of 5 years	Infection at stimulator site 1/20 (5%) with neurostimulation 2/20 (10%) with sham treatment	Reported as not significant