2.

Network meta‐analysis plot of interactions among included studies displayed for a random‐effects, risk ratio model, regarding the risk of transient neurological symptoms following spinal anaesthesia with lidocaine versus other local anaesthetics in adults undergoing surgery. Each node represents an individual local anaesthetic. The node size is proportional to the number of studies.
 The node colours are determined by the individual study 'Risk of bias' assessment (green: no concerns; yellow: some concerns; red: major concerns).
 The width of the edges is proportional to the inverse variance of the effect size. The edge colours reflect the average risk of bias. bupi: bupivacaine; chloro: 2‐chloroprocaine; levo: levobupivacaine; lido: lidocaine; mepi: mepivacaine; prilo: prilocaine; pro: procaine; ropi: ropivacaine.