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. Author manuscript; available in PMC: 2014 Sep 22.
Published in final edited form as: Cochrane Database Syst Rev. 2011 Mar 16;(3):CD007938. doi: 10.1002/14651858.CD007938.pub2
Number of Percent with outcome
Outcome Studies Participants Gabapentin Placebo Risk ratio (95% CI) NNT (95% CI)
At least 50% pain relief 1 305 21 14 1.5 (0.9 to 2.4) not calculated
PGIC very much improved 1 305 12 6 2.0 (0.9 to 4.3) not calculated
PGIC much or very much improved 1 305 31 14 2.2 (1.4 to 3.4) 5.9 (3.8 to 13)