Study	Reason for exclusion
Barbara 2001	Allocation: non‐RCT
Buchanan 2010	Allocation: non‐RCT
Densert 2001	Allocation: non‐RCT
Franz 2005	Allocation: RCT Participants: patients with Ménière's disease Intervention: comparison of Meniett versus P‐100 pulse generator
Shojaku 2011	Allocation: RCT Participants: comparison between patients with Ménière's disease and delayed endolymphatic hydrops
Stokroos 2006	Allocation: non‐RCT
Watanabe 2011	Allocation: RCT Participants: comparison between patients with Ménière's disease and delayed endolymphatic hydrops

RCT: randomised controlled trial