共查询到17条相似文献，搜索用时 156 毫秒
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为了解医学科研论文中统计方法的应用现状及存在问题,对2004-07/2005-02某医学院校学报所有拟发表的449篇医学论文中统计学应用情况进行统计审查,建立调查数据库并进行统计分析.拟发表医学论文中统计方法使用率为78.17%.需要采用的统计方法中,ANOVA占33.19%,重复ANOVA占13.36%,团体t检验占12.93%.应用统计方法的论文,统计方法误用率为57.26%,其中最常见的错误为t检验误用.不同来源作者的论文统计审查结果有显著差异(χ2=11.24,P=0.004).医学科研论文存在统计方法误用较为严重,复杂统计方法应用率低等问题,医学统计学的应用水平有待进一步提高. 相似文献
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为了解医学科研论文中统计方法的应用现状及存在问题,对2004-07/2005-02某医学院校学报所有拟发表的449篇医学论文中统计学应用情况进行统计审查,建立调查数据库并进行统计分析.拟发表医学论文中统计方法使用率为78.17%.需要采用的统计方法中,ANOVA占33.19%,重复ANOVA占13.36%,团体t检验占12.93%.应用统计方法的论文,统计方法误用率为57.26%,其中最常见的错误为t检验误用.不同来源作者的论文统计审查结果有显著差异(χ2=11.24,P=0.004).医学科研论文存在统计方法误用较为严重,复杂统计方法应用率低等问题,医学统计学的应用水平有待进一步提高. 相似文献
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医学论文中统计学处理常见问题及应对措施 总被引：1，自引：0，他引：1
综观医学论文中统计学处理的情况,突出统计资料的现代分类方法,以此为依据重点分析定性和定量资料的统计学处理方法误用情况,从样本量到统计符号的标注,从统计资料的描述到统计结果的解释,全面分析存在的常见问题并给出应对措施. 相似文献
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回归分析是医学研究中大量使用的统计学方法。本文介绍了医学论文中常用的回归分析方法,包括多重线性回归、logistic回归及Cox风险比例回归模型,并对其统计学审核要点进行了总结,对稿件处理措施提出了建议。 相似文献
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目的,分析保健医学类期刊统计学应用情况,提出相应的解决措施;方法,随机选取2010年13种保健医学类期刊39期(每种期刊3期),对发表的1446篇论文进行分析,了解其统计学的应用情况;结果,1446篇论文中有1060篇(73.3%)文章使用了统计方法,其中存在不写具体统计值、t检验代替方差分析、不注明所用的统计学方法和统计术语及符号使用不准确等问题;结论,保健医学类期刊编辑人员应重视和加强数据的统计学处理工作。 相似文献
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在生物医学期刊的编辑工作中,时常可以发现稿件中P值的误用。文章分析稿件中P值的意义、报告、描述和解释的误用情况及其对文章科学性的影响,提出相应的解决方法,并指出置信区间对P值局限性的补充作用。认为生物医学期刊编辑应当增强统计学观念,在处理稿件时严把统计学质量关,以达到提高期刊学术质量的目的。 相似文献
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《Library & information science research》2019,41(3):100968
Conventional statistical methods (e.g. logistics regression, decision tree, etc.) have been used to analyze library demand-driven acquisitions (DDA) data. However, these methods are not well-suited to predict when acquisitions will be triggered or how long e-books will remain unused. Survival analysis, a statistical method commonly used in clinical research and medical trials, was employed to predict the time-to-trigger for DDA purchases within the context of a large research university library. By predicting which e-books will be triggered (i.e., purchased), as well as the time to trigger occurrence, the method tested in this study provides libraries a deeper understanding of factors influencing their DDA purchasing patterns. This understanding will help libraries optimize their DDA profile management and DDA budgets. This research provides a demonstration of how data science techniques can be of value for the library environment. 相似文献
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A number of linear classification methods such as the linear least squares fit (LLSF), logistic regression, and support vector machines (SVM's) have been applied to text categorization problems. These methods share the similarity by finding hyperplanes that approximately separate a class of document vectors from its complement. However, support vector machines are so far considered special in that they have been demonstrated to achieve the state of the art performance. It is therefore worthwhile to understand whether such good performance is unique to the SVM design, or if it can also be achieved by other linear classification methods. In this paper, we compare a number of known linear classification methods as well as some variants in the framework of regularized linear systems. We will discuss the statistical and numerical properties of these algorithms, with a focus on text categorization. We will also provide some numerical experiments to illustrate these algorithms on a number of datasets. 相似文献
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广东3种医学学报统计学应用现状和分析 总被引：2，自引：0，他引：2
为了了解广东省医学学报论文中统计学应用的状况,对3种医学院校学报2006年670篇论文进行分析.结果有448篇(66.86%)文章使用了统计方法,其中存在只写P值而不注明所用的统计学方法、t检验代替方差分析和统计术语及符号使用不准确等问题.认为这应引起作者和编辑人员的重视,并提出了相应的对策. 相似文献
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为帮助医学期刊编辑更好地完成统计学结果的审核工作,针对医学论文存在的统计学问题,介绍一种可以对二次数据进行统计分析的软件——EpiCalc2000,通过2个案例说明其使用方法。还介绍医学期刊编辑学习、运用统计学方法的捷径。 相似文献
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《Journal of Informetrics》2014,8(1):123-135
Journal self-citations strongly affect journal evaluation indicators (such as impact factors) at the meso- and micro-levels, and therefore they are often increased artificially to inflate the evaluation indicators in journal evaluation systems. This coercive self-citation is a form of scientific misconduct that severely undermines the objective authenticity of these indicators. In this study, we developed the feature space for describing journal citation behavior and conducted feature selection by combining GA-Wrapper with RelifF. We also constructed a journal classification model using the logistic regression method to identify normal and abnormal journals. We evaluated the performance of the classification model using journals in three subject areas (BIOLOGY, MATHEMATICS and CHEMISTRY, APPLIED) during 2002–2011 as the test samples and good results were achieved in our experiments. Thus, we developed an effective method for the accurate identification of coercive self-citations. 相似文献
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构建以科学计量学指标为基础的基础医学科研成果的评价指标体系,并用Logistic回归与判别分析模拟评价,
比较两种方法在基础医学研究成果评价中的评价效果。结果表明,在预测准确率方面,Logistic回归比判别分析稍高,
两者筛选出了经验认为重要的变量,较全面反映科研成果水平的各个方面,初拟评价指标体系合理,可用于评价基础
医学科研成果,即为成果评价的初步预评提供参考。 相似文献