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Meta-analysis of the studies evaluating the effects of CET on primary dysmenorrhea. (A) CET vs NSAIDs, outcome: TER. (B) CET vs NSAIDs, outcome: MSS. CET = catgut embedding therapy, CI = confidence interval, IV = inverse variance, MSS = menstrual symptom score, NSAIDs = nonsteroidal anti-inflammatory drugs, SD = standard deviations, TER = total effective rate.
