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Table 1.

Search strategy for Ovid MEDLINE.

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Fig 1.

PRISMA flow diagram.

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Fig 2.

Risk of bias for included trials.

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Fig 3.

Forest plot of the IPSS for acupuncture versus sham acupuncture for short-term follow-up endpoints.

(A) Forest plot of the IPSS for the 3 included trials. (B) Forest plot of the sensitivity analysis of IPSS for the 2 trials of higher quality. SD = standard deviation; CI = confidence interval; df = degrees of freedom.

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Fig 4.

Forest plot of the IPSS for acupuncture versus sham acupuncture for medium-term follow-up endpoints.

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Fig 4 Expand

Fig 5.

Forest plot of Qmax for acupuncture versus sham acupuncture for short-term follow-up endpoints.

(A) Forest plot of Qmax for the 3 trials included. (B) Forest plot of the sensitivity analysis of Qmax for the 2 trials of higher quality.

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Fig 5 Expand