Table 2.
Searching strategies and results for different databases
| Database | Database URL | Search strategy | Results | |
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| Pubmed | https://www.ncbi.nlm.nih.gov/pubmed/ | Postoperative [Title/Abstract] AND ((rs1799971 [Title] OR A118G [Title]) OR OPRM1 [Title]) | 30 | |
| Embase | https://www.embase.com/ | rs1799971:ti OR A118G:ti OR OPRM1:ti AND postoperative:ab,ti | 38 | |
| Cochrane Library | http://www.cochranelibrary.com/ | A118G and postoperative:ti,ab,kw (Word variations have been searched) | 4 | |
| Web of Science | http://apps.webofknowledge.com/ | TOPIC: (A118G AND postoperative) Timespan: All years. Indexes: SCI-EXPANDED, SSCI, A&HCI, ESCI. | 59 | |
| CNKI | http://www.cnki.net/ | Search criteria: ((topic = A118G or topic = OPRM1) and (title = postoperative or title = anesthesia)) (exact match), album navigation: all; Database: literature cross-library retrieval method: cross-library retrieval database: literature | 6 | |
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| Searching results and information of relevant academic meeting abstracts | ||||
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| Year | City | Meeting name | Article title | Whether included |
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| 2014 | Chengdu, Sichuan Province, P.R. China | The 14th Academic Annual Conference of Chinese Medical Association Clinical Pharmacy Branch | Genetic-opioid association of the OPRM1 A118G Polymorphism in postoperative pain: systemic review and meta-analysis | No |