Characteristics of RCTs already included in the Cochrane reviews and the hypothetically eligible Korean RCTs.

<p>RCTs: randomized controlled trials.</p><p>SD: standard deviation.</p><p>PONV: postoperative nausea and vomiting.</p><p>TKM: traditional Korean medicine.</p>*<p>Values are provided as number of trials and (total number of participants).</p

Flowchart of trial selection process.

<p>RCT  =  randomized controlled trial.</p

Frequency of each database searched in the eight topic-matched Cochrane acupuncture reviews.

<p>Frequency of each database searched in the eight topic-matched Cochrane acupuncture reviews.</p

Screening results for potentially eligible Korean RCTs for relevant Cochrane reviews.

*<p>: Studies reported in English and Chinese were searched.</p>**<p>: Studies reported in English and French were searched.</p

Changes of meta-analysis after the inclusion of 16 Korean RCTs in relevant eight topic-matched Cochrane reviews.

<p>Changes of meta-analysis after the inclusion of 16 Korean RCTs in relevant eight topic-matched Cochrane reviews.</p

Flowchart of review selection process.

<p>RCT  =  randomized controlled trial.</p

Methodological quality of trials included in the eight topic-matched Cochrane reviews and the corresponding16 Korean studies.

*<p>Fisher's exact test.</p><p>Values are presented as number (%).</p

Search terms used and journals searched.

<p>Search terms used and journals searched.</p