Additional file 2 of Optimal dose of perineural dexmedetomidine to prolong analgesia after brachial plexus blockade: a systematic review and Meta-analysis of 57 randomized clinical trials

Additional file 2. Subgroup analyses of DEX on DOA by BPB approaches and localization techniques. Abbreviations: DEX, dexmedetomidine; DOA, duration of analgesia; BPB, brachial plexus block; MD, mean difference; CI, confidence interval; LA, local anesthetic.