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. Author manuscript; available in PMC: 2016 Apr 1.
Published in final edited form as: J Anesth. 2014 Aug 6;29(2):206–211. doi: 10.1007/s00540-014-1892-9

Figure 3.

Figure 3

Mean (95% CI) group pain response scale scores are shown (P = placebo, L = lidocaine, M = magnesium, LM = lidocaine plus magnesium). Pain score scale: 0 = no pain; 1 = mild pain (pain reported only in response to questioning and without behavioral signs); 2 = moderate pain (pain reported in response to questioning and accompanied by a behavioral sign, or pain reported spontaneously without questioning); and 3 = severe pain (strong vocal response or response accompanied by facial grimacing, arm withdrawal, or tears.).