共查询到16条相似文献，搜索用时 329 毫秒
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目的：评价《中华儿科杂志》发表系统评价／Meta分析（SR／MA）的报告质量和方法学质量。方法：检索发表在《中华儿科杂志》上的系统评价／Meta分析文献,共纳入13篇。提取纳入文献的基本信息,采用系统综述和Meta分析优先报告的条目（PRISMA）规范和方法学质量评价工具AMSTAR量表进行质量评价,使用RevMan5．0软件进行统计分析。结果：PRISMA评分范围14-23．5分,平均为20．0±3．11分;AMSTAR评分范围和平均分分别为3—7．5和6．04±1．38分。结论：《中华儿科杂志》发表系统评价／Meta分析报告和方法学质量中等,报告质量规范和方法学质量还有待提高。 相似文献
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目的：评价PRISMA声明对发表于《循证医学》杂志的干预类系统评价/Meta分析报告质量的影响。方法：根据纳入排除标准,纳入2001-2011年发表于《循证医学》的干预性试验系统评价/Meta分析,采用PRISMA量表对纳入系统评价/Meta分析进行评价,用Meta Analyst软件进行统计分析。结果：共纳入70个系统评价/Meta分析,涉及14个疾病谱。 PRISMA的发布和高校作者发表的系统评价/Meta分析,可以提高其报告质量（P＜0．05）,基金资助和作者数量对文献报告质量影响不大。结论：发表于《循证医学》杂志的系统评价/Meta分析在文献检索、筛选、偏倚评估和其他分析方法等方面亟待改善,报告质量有待提高。 PRISMA的发布可在整体上改善系统评价/Meta分析的报告质量。 相似文献
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目的:通过对国内有关硒与癌症发生的相关文献进行循证医学评价来了解目前相关文献的质量现状.方法:在生物医学文献数据库中以"硒"和"癌症"为主题词检索建库至2014年6月的相关文献,对检出的文献进行筛选后,利用九级证据评价标准及M量表对所纳入的文献进行评价.结果:九级评价标准:纳入的376篇文献中系统评价/Meta分析的文献为0篇,随机对照试验(RCT)文献33篇,其他343篇.M量表:33篇RCT文献评价结果中4分的文献有3篇,未见大于4分的文献.结论:九级评价结果:目前国内有关硒与癌症关系的研究中,动物研究和体外研究占多数,RCT研究相对较少,系统评价/Meta分析文献未见.M量表评价结果:目前国内有关硒与癌症发生相关文献的质量整体水平不高,在实验研究设计中存在很多问题,有待进一步提高.高质量证据的研究表明硒具有防癌治癌的作用,硒制剂能够增强一些化疗药物的疗效,并且减少化疗或放疗对人体产生的副作用. 相似文献
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目的：评估中国科学引文数据库（CSCD）收录的7种儿科类期刊质量。方法：通过“中国科技期刊引证指标数据库”获得7种儿科类期刊2013年的篇均参考文献、被引半衰期、H 指数、引用半衰期、自引率、影响因子、即年指数、自被引率等数据,并将指标按其与期刊质量的正、负相关关系分为两组,分别绘制蛛网图,然后结合7种儿科类期刊的发文情况进行质量评估。结果：以篇均参考文献、影响因子、H 指数、即年指数为一组进行蛛网图法评估,排在前3位的期刊是《中华儿科杂志》《中华实用儿科临床杂志》、《中国循证儿科杂志》;以引用半衰期、自引率、被引半衰期、自被引率为一组进行蛛网图法评估,排在前3位的期刊是《中国循证儿科杂志》、《中华儿科杂志》、《临床儿科杂志》。结论：7种儿科类期刊整体质量较高,《中国循证儿科杂志》、《中华儿科杂志》综合评价最好,其他各刊还有提升空间。 相似文献
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目的：通过对国内有关硒与胃癌关系研究的文献进行分析,了解目前国内相关研究现状,且为临床医生提供循征医学证据。方法：在中国知网、万方等数据库中检索有关硒与胃癌研究的文献,并运用循征医学评价方法——Jadad 量表,对文献质量及目前研究情况进行分析。结果：经手工和电子数据库检索共得国内硒与胃癌关系研究的文献488 篇,纳入研究的文献283 篇,经Jadad 量表对其进行评价,得到0 分的文献共271 篇（95.76%）,1 分的文献共11 篇（3.89%）,2 分的文献1 篇（0.35%）,大于3分的文献未见。结论：我国有关硒与胃癌关系的临床研究文献质量总体水平较低,有待进一步提高。 相似文献
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述评类文章的有关问题探讨 总被引：2，自引：0，他引：2
为了解目前医学期刊述评类文章的质量,对中华医学会杂志社所属的5种月刊（《中华医学杂志》、《中华内科杂志》、《中华外科杂志》、《中华妇产科杂志》、《中华放射学杂志》）1995年刊出的述评类文章进行了统计分析。结果:5种月刊共刊出述评类文章72篇,平均每期1、2篇;43篇述评与各刊本期所报道的内容密切相关,而另29篇述评则与该刊本期的报道内容关系不大;60篇文章备仅为1位作者,9篇文章各为2位作者,3篇文章各为3位作者;每篇文章1200-5200字不等,平均2900字;刊出周期小于90天者33篇,91～180天者27篇,181～270天者5篇,大于270天者7篇;54篇文章未引用参考文献,在引用文献的18篇文章中,文献引用量为2～12条不等;3种期刊将述评类文章的文题及作者列入本刊的英文目次。结论:述评类文章应有针对性;应观点鲜明、逻辑性强;鼓励学术争鸣;以2500字以内为宜;作者必须署名;应引用必要的参考文献。 相似文献
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秦勇 《中华医学图书馆杂志》2014,(2):57-59
目的：通过对F1000医学版收录文献的分析,从专家视角确认医学期刊的价值。方法：按照所属期刊、年度,统计分析F1000医学版截至2011年11月收录的被推荐文献,根据各种期刊每年发表的文献总量计算各种期刊、各年度的推荐比并排序。结果：F1000医学版共推荐文献27960篇,新英格兰医学杂志被推荐文献801篇,排在首位。按推荐比排序与按推荐文献量排序,结果相差较大。结论：F1000医学版总推荐文献数量较少,能够帮助读者以最短的时间获取有价值的文献信息。推荐比与被推荐文献数量均可作为评价期刊的重要依据。 相似文献
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文献是Meta分析的基础及前提，查全以及查准文献至关重要。参与Meta分析的文献质量越高，数据提取越准确，筛选流程越严谨，得到的结论越可靠。整个Meta分析都是围绕文献展开，显见文献的重要性。笔者针对编辑在Meta分析类论文审理过程中遇到的关于文献的常见问题，从文献的纳入排除标准不规范、文献检索的科学性不足、纳入的文献存在质量问题、文献数据提取不准确、文献筛选流程不严谨、文献统计分析存在问题6个方面结合案例进行总结分析，旨在提高编辑的审稿水平和Meta分析类论文的质量。 相似文献
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Brian S Alper Jason A Hand Susan G Elliott Scott Kinkade Michael J Hauan Daniel K Onion Bernard M Sklar 《Journal of the Medical Library Association》2004,92(4):429-437
OBJECTIVES: Medicine must keep current with the research literature, and keeping current requires continuously updating the clinical knowledge base (i.e., references that provide answers to clinical questions). The authors estimated the volume of medical literature potentially relevant to primary care published in a month and the time required for physicians trained in medical epidemiology to evaluate it for updating a clinical knowledge base. METHODS: We included journals listed in five primary care journal review services (ACP Journal Club, DynaMed, Evidence-Based Practice, Journal Watch, and QuickScan Reviews). Finding little overlap, we added the 2001 "Brandon/Hill Selected List of Print Books and Journals for the Small Medical Library." We counted articles (including letters, editorials, and other commentaries) published in March 2002, using bibliographic software where possible and hand counting when necessary. For journals not published in March 2002, we reviewed the nearest issue. Five primary care physicians independently evaluated fifty randomly selected articles and timed the process. RESULTS: The combined list contained 341 currently active journals with 8,265 articles. Adjusting for publication frequency, we estimate 7,287 articles are published monthly in this set of journals. Physicians trained in epidemiology would take an estimated 627.5 hours per month to evaluate these articles. CONCLUSIONS: To provide practicing clinicians with the best current evidence, more comprehensive and systematic literature surveillance efforts are needed. 相似文献
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This is the first part of a comprehensive, quantitative study of biomedical book reviewing. The data base of the total project was built from statistics taken from all 1970 issues of biomedical journals held in the Science Library of the Massachusetts Institute of Technology. Of 285 so-called "life sciences" journals held by that library, fifty-four English journals (excluding Science and Nature) were found to contain bona fide book reviews (as contrasted with mere author-title lists) and were therefore selected for close study. The statistical results reveal that there were 3,347 reviews of 2,067 biomedical books in these fifty-four selected journals in 1970. Part I of the study identifies key biomedical reviewing journals of quantitative significance. The top ten journals, British Medical Journal, Lancet, Annals of Internal Medicine, Journal of the American Medical Association, Archives of Internal Medicine, New England Journal of Medicine, Quarterly Review of Biology, Bioscience, Canadian Medical Association Journal,(*) and American Journal of the Medical Sciences, accounted for 63.03% of the total number of reviews in 1970. 相似文献
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应用文献计量学方法,对《神经解剖学杂志》2000—2009年载文总数、基金论文数、论文高产地区、高产机构、核心作者等文献计量指标进行统计,对引文量、引文语种分布、影响因子、被引频次等进行了分析,客观评价了其载文质量及学术水平,为《神经解剖学杂志》进一步发展提供理论依据。 相似文献
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Background: Search filters can potentially improve the efficiency of searches involving electronic databases such as medline and embase . Although search filters have been developed for identifying records that contain adverse effects data, little is known about the sensitivity of such filters. Objectives: This study measured the sensitivity of using available adverse effects filters to retrieve papers with adverse effects data. Methods: A total of 233 included studies from 26 systematic reviews of adverse effects were used for analysis. Search filters from medline and embase were tested for their sensitivity in retrieving the records included in these reviews. In addition, the sensitivity of each individual search term used in at least one search filter was measured. Results: Subheadings proved the most useful search terms in both medline and embase . No indexing terms in medline achieved over 12% sensitivity. The sensitivity of published search filters varied in medline from 3% to 93% and in embase from 57% to 97%. Whether this level of sensitivity is acceptable will be dependent on the purpose of the search. Conclusions: Although no adverse effects search filter captured all the relevant records, high sensitivity could be achieved. Search filters may therefore be useful in retrieving adverse effects data. 相似文献
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Jos Antonio Salvador-Olivn Gonzalo Marco-Cuenca Rosario Arquero-Avils 《Journal of the Medical Library Association》2021,109(4):561
Objective:Locating systematic reviews is essential for clinicians and researchers when creating or updating reviews and for decision-making in health care. This study aimed to develop a search filter for retrieving systematic reviews that improves upon the performance of the PubMed systematic review search filter.Methods:Search terms were identified from abstracts of reviews published in Cochrane Database of Systematic Reviews and the titles of articles indexed as systematic reviews in PubMed. Both the precision of the candidate terms and the number of systematic reviews retrieved from PubMed were evaluated after excluding the subset of articles retrieved by the PubMed systematic review filter. Terms that achieved a precision greater than 70% and relevant publication types indexed with MeSH terms were included in the filter search strategy.Results:The search strategy used in our filter added specific terms not included in PubMed''s systematic review filter and achieved a 61.3% increase in the number of retrieved articles that are potential systematic reviews. Moreover, it achieved an average precision that is likely greater than 80%.Conclusions:The developed search filter will enable users to identify more systematic reviews from PubMed than the PubMed systematic review filter with high precision. 相似文献
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The development of search filters for adverse effects of surgical interventions in medline and Embase 
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