【正文】
3 or 4 or 5 or 6 or 7 or 8 or 9 11 exp Gangliosides/ 12 anglioside* or gm1 or gm1 or gm2 or gm2 or gm3 or gm3 or sygen* or sialoglycosphingolipid* 13 11 or 12 14. 10 and 13 檢索策略之二: OVID MEDLINE 1966 to October 2023 [3] 1. exp Fluid Therapy/ 2. exp Infusions, Intravenous/ 3. ((fluid* or volume or plasma or blood) adj3 (replace* or therap* or substitut* or restorat* or resuscitat*)).ab,ti. 4. ((fluid* or volume or plasma or blood) adj3 (administrat* or challenge or perfusion or intravenous or shock)).ti,ab. 5. 1 or 2 or 3 or 4 6. exp Time Factors/ 7. exp Plasma Volume/ 8. (timing or delayed or intermediate or early or selective or rapid or immediate*).ti. 9. (rapid adj3 infusion*).ab,ti. 10. ((small* or large*) adj3 volume).ab,ti. 11. 6 or 7 or 8 or 9 or 10 12. 5 and 11 檢索策略之二: OVID MEDLINE 1966 to October 2023 [3] 13. randomi?,ti. 14. randomized controlled . 15. controlled clinical . 16. . 17. clinical trials as . 18. . 19. . 20. or/1319 21. . 22. 20 and 21 23. 22 and 12 檢索策略之三: EMBASE 1980 to October 2023 [3] 1. exp Fluid Therapy/ 2. exp Infusions, Intravenous/ 3. ((fluid* or volume or plasma or blood) adj3 (replace* or therap* or substitut* or restorat* or resuscitat*)).ab,ti. 4. ((fluid* or volume or plasma or blood) adj3 (administrat* or challenge or perfusion or intravenous or shock)).ti,ab. 5. 1 or 2 or 3 or 4 6. (timing or delayed or intermediate or early or selective or rapid or immediate*).ti. 7. (rapid adj3 infusion*).ab,ti. 8. ((small* or large*) adj3 volume*).ab,ti. 9. *time factors/ 10. *plasma volume/ 11. 6 or 7 or 8 or 9 or 10 12. 5 and 11 檢索策略之三: EMBASE 1980 to October 2023 [3] 13. exp Randomized Controlled Trial/ 14. exp controlled clinical trial/ 15. randomi?. 16. . 17. exp Clinical Trial/ 18. . 19. . 20. 13 or 14 or 15 or 16 or 17 or 18 or 19 21. exp human/ 22. 20 and 21 23. 22 and 12 檢索策略之四: PUBMED searched June 5 2023 (Limit: added to database in last 90 days) [2] 1 (Gangliosides[Mesh] OR ganglioside* or gm1 or gm1 or gm2 or gm2 or gm3 or gm3 or sygen* or sialoglycosphingolipid*) 2 (SCI OR paraplegi* OR paraparesis OR qadriplegi* OR quadriparesi* OR tetraplegi* OR tetraplagi* OR tetraparesis OR Spinal Cord Injuries[Mesh] OR Paraplegia[Mesh] OR Quadriplegia[Mesh] 3 ((spine or spinal) AND (fracture* or wound* or trauma* or injur* or damag*)) OR ((spinal cord) AND (contusion or laceration or transaction or trauma or injur* or ischemia)) 4 2 OR 3 5 1 AND 4 對(duì) PUBMED searched June 5 2023 (Limit: added to database in last 90 days) 的注解 此檢索策略的特點(diǎn)是將檢索的時(shí)間范圍限定在最近的 90天內(nèi) , 并且檢索策略主要針對(duì)疾病和干預(yù)措施 , 可能查準(zhǔn)率偏低 , 不符合要求的研究文獻(xiàn)所占比例可能高一些 , 但因檢索的時(shí)間范圍有限 , 命中率可能也有限 , 從篩選研究文獻(xiàn)的角度來講可能不太難 , 同時(shí)彌補(bǔ)了通過 OVID檢索研究文獻(xiàn)有可能的漏檢 。 更新系統(tǒng)評(píng)價(jià)的檢索問題 進(jìn)行新檢索更為重要的問題也許是數(shù)據(jù)庫的選擇和檢索策略的制定。在數(shù)據(jù)庫的選擇方面,可能有些數(shù)據(jù)庫先前檢索過,但為了更新檢索需要再次檢索,以前的檢索策略也有可能需要調(diào)整或完善。本講所列的兩篇系統(tǒng)評(píng)價(jià)在新檢索時(shí)所選數(shù)據(jù)庫較為廣泛,除檢索推薦選用的書目數(shù)據(jù)庫外,還檢索了引文數(shù)據(jù)庫,專用于檢索或注冊(cè)隨機(jī)對(duì)照試驗(yàn)的數(shù)據(jù)庫,Cochrane協(xié)作網(wǎng)專業(yè)組的數(shù)據(jù)庫,有助于提高查全率,值得參考。這兩篇系統(tǒng)評(píng)價(jià)在新檢索時(shí),既檢索了 MEDLINE數(shù)據(jù)庫,也將檢索最近 90天的 PUBMED作為補(bǔ)充,這樣就避免了漏檢正在加工處理的 PreMEDLINE數(shù)據(jù)庫中的記錄。 更新系統(tǒng)評(píng)價(jià)的檢索問題 2023年兩次更新的 《 Cochrane系統(tǒng)評(píng)價(jià)手冊(cè) 》對(duì)系統(tǒng)評(píng)價(jià)的完成和更新提出了更高的要求,結(jié)合更新后的手冊(cè)的內(nèi)容,仔細(xì)瀏覽 2023年第 1期標(biāo)有“ New search”的系統(tǒng)評(píng)價(jià)與檢索有關(guān)的內(nèi)容,可以發(fā)現(xiàn)盡管 Cochrane系統(tǒng)評(píng)價(jià)被公認(rèn)為在質(zhì)量方面有嚴(yán)格的要求,但有的系統(tǒng)評(píng)價(jià)在更新時(shí)進(jìn)行新檢索仍有待改進(jìn),例如,當(dāng)系統(tǒng)評(píng)價(jià)在發(fā)表后,Cochrane 協(xié)作網(wǎng)要求要么在兩年內(nèi)更新,要么對(duì)為什么沒有這樣做給出解釋。 5. 如何借鑒已有的檢索策略 借鑒已有的檢索策略最重要的一點(diǎn)是首先應(yīng)弄清這些檢索策略是在何種檢索平臺(tái)上進(jìn)行檢索的。例如:對(duì) Cochrane協(xié)作網(wǎng)中心注冊(cè)數(shù)據(jù)庫( Cochrane Central Register of Controlled Trials)的檢索,應(yīng)弄清作者是通過 John Wiley Sons公司的“ The Cochrane Library”進(jìn)行檢索 ,還是通過 OVID公司的檢索平臺(tái)對(duì)其進(jìn)行檢索,雖這兩種檢索平臺(tái)用的數(shù)據(jù)庫名全稱一致,但前者縮寫為CENTRAL或用“ Clinical Trials”表示, 后者的縮寫則是 CCTR,針對(duì)這兩個(gè)檢索平臺(tái)的檢索策略是有區(qū)別的。 如何借鑒已有的檢索策略 對(duì) MEDLINE的檢索有的是在 OVID檢索平臺(tái)上對(duì)該庫檢索,有的是通過其他檢索平臺(tái)( WinSpirs等)對(duì)該庫檢索。不同的檢索平臺(tái)在檢索功能、檢索標(biāo)識(shí)符等方面必然會(huì)有差異,任意套用就會(huì)出現(xiàn)問題。例如對(duì) EMBASE的檢索,已能借鑒的檢索策略不少是通過 OVID檢索平臺(tái)進(jìn)行的檢索,不能指望將這些檢索策略完整地帶到 。 如何借鑒已有的檢索策略 首先有必要熟悉當(dāng)前能用的檢索平臺(tái)對(duì)相關(guān)數(shù)據(jù)庫進(jìn)行檢索時(shí)的各種功能或特點(diǎn)(如 MEDLINE數(shù)據(jù)庫用的是 MeSH主題詞表,而 EMBASE用的是 EMTREE主題詞表),也應(yīng)熟悉在當(dāng)前選用的檢索詞在主題詞庫中有無變化。 在借鑒已有的檢索策略之前,花一些時(shí)間對(duì)相關(guān)的檢索平臺(tái)和相關(guān)數(shù)據(jù)庫的功能加以熟悉是較為可行的辦法。 本講有關(guān)內(nèi)容的說明 本講有關(guān)“ 更新系統(tǒng)評(píng)價(jià)檢索策略的制定 ”和 “ 如何借鑒已有的檢索策略 ”的文字部分請(qǐng)見本人發(fā)表在《中國循證醫(yī)學(xué)雜志》 2023年第 7期上的 The Ccochrane Library “ new search”圖標(biāo)的特點(diǎn)及相關(guān)檢索策略分析 小結(jié)(借用): Cochrane Handbook for Systematic Reviews of Interventions Sources to search Summary points (1) Cochrane review authors should seek advice from their Trials Search Coordinator on sources to search. CENTRAL is considered to be the best single source of reports of trials for inclusion in Cochrane reviews. The three bibliographic databases generally considered to be the most important sources to search for studies for inclusion in Cochrane reviews are CENTRAL, MEDLINE and EMBASE. National, regional and subjectspecific databases should be selected for searching according to the topic of the review. 小結(jié)(借用): : Cochrane Handbook for Systematic Reviews of Interventions Sources to search Summary points (2) Conference abstracts and other grey literature can be an important source of studies for inclusion in reviews. Reference lists in other reviews, guidelines, included (and excluded) studies and other related articles should be searched for additional studies. Efforts should be made to identify unpublished studies. Ongoing trials should be identified and tracked for possible inclusion in reviews on pletion. Trials registers and trials results registers are an important source of ongoing and unpublished trials.. 如有問題 聯(lián)系電話: 02885422068 Email: