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目的:对比分析PubMed和Embase有关循证医学的查询功能。方法:通过检索循证医学证据的实例,从检索途径、检索过程、数据结构以及检索效果4个方面,对两个数据库有关循证医学的查询功能进行比较。结果:Embase提供更多可视化、模块化的检索途径,在循证医学证据检索操作方面更有优势,且检索过程更为简洁。PubMed检索框架较固定,能通过内嵌过滤器实现循证医学证据查询,标引方式更加规范,检索噪音较少。结论:PubMed和Embase均为生物医学领域使用频率较高的数据库,各有特点,同时检索两个数据库可优势互补。  相似文献   
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目的:对比分析Embase.com和PubMed的检索结果,为科研人员推荐最适合的检索工具和提高检索效率。方法:选取8个不同学科的检索词,在PubMed和Embase.com中分别采用主题词检索和带有自动转换功能的基本检索两种途径检索。结果:8个检索词在检索中出现6种不同情况。结论:通过主题词检索,总体来说Embase.com检全率要高于PubMed;带有自动转换功能的基本检索,两个数据库都会出现错误转换,但从转换的原理上看,PubMed的查准率更高。  相似文献   
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ObjectiveTo investigate the effects of resistance exercise (RE) on body structure and function, activity, and participation in individuals with Parkinson Disease (PD) in the mild to moderate stages.Data SourcesMedline, Embase, Web of Science, The Cochrane Library, Lilacs, and PEDro were searched from inception until June 2020 using the terms “Parkinson Disease,” “Exercise,” “Resistance Training,” “Muscle Strength,” “Cardiorespiratory Fitness,” “Postural Balance,” “Gait,” and “Quality of Life.”Study SelectionWe included studies conducted in individuals with PD involving RE compared with a control group. Two independent reviewers performed the selection process based on titles, abstracts, and full-text reading. In total, 270 individuals with PD were included from 10 selected studies.Data extractionTwo reviewers independently extracted characteristics related to participants, intervention and control types, and results. The PEDro scale was used to assess the methodological quality, and the level of evidence was analyzed and synthesized using the Grading of Recommendation, Assessment, Development, and Evaluations approach.Data SynthesisThe level of evidence for body structure and function was low and without effect for lower limb muscle strength; very low and with effect for upper limb muscle strength, cardiorespiratory fitness, and postural balance; and very low and without effect for flexibility after RE training. For activity, the evidence was very low and with effect for gait and very low and without effect for mobility. For participation (ie, quality of life) the evidence was very low and without effect.ConclusionsAlthough the level of evidence was low to very low, RE was shown to promote improvements in body structure and function (upper limb muscle strength, cardiovascular function, postural balance) and activity (gait). In contrast, RE did not significantly improve participation (quality of life). However, based on the present findings, the practice of RE can be recommended for individuals with PD in the mild to moderate stages.  相似文献   
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目的:比较分析PubMed与Embase收录中国生物医学期刊及其文献标引质量。方法:从重复收录、元数据字段分析PubMed与Embase收录中国生物医学期刊情况,从标引字段、标引深度、标引差异性比较其文献标引质量。结果:PubMed收录的中国生物医学期刊自身元数据描述有29个字段,文献数据标引有47个字段,篇均主题词标引深度为11.12;Embase收录的中国生物医学期刊自身元数据描述有13个字段,文献数据标引有44个字段,篇均主题词标引深度为14.13。结论:PubMed对其收录的中国生物医学期刊自身元数据的描述更详细,Embase对收录的中国生物医学期刊文献主题标引的粒度更细、数量更多、标引更规范。二者对中国生物医学文献的标引较之对外文文献的标引一致性较高。  相似文献   
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目的:比较分析PubMed与Embase的主题标引及检索功能。方法:从词表的发展历程、结构体系、主题标引、主题检索4个方面对Pubmed和Embase进行比较分析。结果:MeSH的历史悠久,成熟稳定,应用更广。MeSH和Emtree的结构类似,Emtree的体量更大;PubMed的主题标引在规范性方面更为出色。结论:PubMed和Embase二者各有特色,PubMed更方便易用,Embase更注重可视化操作以及检索结果处理的多样性。  相似文献   
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