Sample size In the subgroup analysis involving a sample size of less than 40, a highly significant heterogeneity was observed among the three studies (I 2 = 80%).
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Electroacupuncture for acute gouty arthritis: a systematic review and meta-analysis of randomized controlled trials.
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Sample size In the subgroup analysis with a sample size of less than 40, mildly significant heterogeneity was observed among the 8 studies (I 2 = 23%).