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  • 文章类型: Journal Article
    背景:大型语言模型(LLM)具有支持健康信息学中有前途的新应用的潜力。然而,缺乏在生物医学和卫生政策背景下对LLM进行微调以执行特定任务的样本量考虑因素的实际数据。
    目的:本研究旨在评估用于微调LLM的样本量和样本选择技术,以支持针对利益冲突披露声明的自定义数据集的改进的命名实体识别(NER)。
    方法:随机抽取200份披露声明进行注释。所有“人员”和“ORG”实体均由2个评估者识别,一旦建立了适当的协议,注释者独立地注释了另外290个公开声明。从490个注释文档中,抽取了2500个不同大小范围的分层随机样本。2500个训练集子样本用于在2个模型架构(来自变压器[BERT]和生成预训练变压器[GPT]的双向编码器表示)中微调语言模型的选择,以改善NER。多元回归用于评估样本量(句子)之间的关系,实体密度(每个句子的实体[EPS]),和训练的模型性能(F1分数)。此外,单预测阈值回归模型用于评估增加样本量或实体密度导致边际收益递减的可能性。
    结果:在架构中,微调模型的顶线NER性能从F1分数=0.79到F1分数=0.96不等。双预测多元线性回归模型的多重R2在0.6057~0.7896之间有统计学意义(均P<.001)。在所有情况下,EPS和句子数是F1得分的显著预测因子(P<.001),除了GPT-2_large模型,其中每股收益不是显著的预测因子(P=0.184)。模型阈值表示由增加的训练数据集样本量(以句子的数量衡量)的边际收益递减点,点估计范围从RoBERTa_large的439个句子到GPT-2_large的527个句子。同样,阈值回归模型表明每股收益的边际收益递减,点估计在1.36和1.38之间。
    结论:相对适度的样本量可用于微调适用于生物医学文本的NER任务的LLM,和训练数据实体密度应代表性地近似生产数据中的实体密度。训练数据质量和模型架构的预期用途(文本生成与文本处理或分类)可能是,或更多,重要的是训练数据量和模型参数大小。
    BACKGROUND: Large language models (LLMs) have the potential to support promising new applications in health informatics. However, practical data on sample size considerations for fine-tuning LLMs to perform specific tasks in biomedical and health policy contexts are lacking.
    OBJECTIVE: This study aims to evaluate sample size and sample selection techniques for fine-tuning LLMs to support improved named entity recognition (NER) for a custom data set of conflicts of interest disclosure statements.
    METHODS: A random sample of 200 disclosure statements was prepared for annotation. All \"PERSON\" and \"ORG\" entities were identified by each of the 2 raters, and once appropriate agreement was established, the annotators independently annotated an additional 290 disclosure statements. From the 490 annotated documents, 2500 stratified random samples in different size ranges were drawn. The 2500 training set subsamples were used to fine-tune a selection of language models across 2 model architectures (Bidirectional Encoder Representations from Transformers [BERT] and Generative Pre-trained Transformer [GPT]) for improved NER, and multiple regression was used to assess the relationship between sample size (sentences), entity density (entities per sentence [EPS]), and trained model performance (F1-score). Additionally, single-predictor threshold regression models were used to evaluate the possibility of diminishing marginal returns from increased sample size or entity density.
    RESULTS: Fine-tuned models ranged in topline NER performance from F1-score=0.79 to F1-score=0.96 across architectures. Two-predictor multiple linear regression models were statistically significant with multiple R2 ranging from 0.6057 to 0.7896 (all P<.001). EPS and the number of sentences were significant predictors of F1-scores in all cases ( P<.001), except for the GPT-2_large model, where EPS was not a significant predictor (P=.184). Model thresholds indicate points of diminishing marginal return from increased training data set sample size measured by the number of sentences, with point estimates ranging from 439 sentences for RoBERTa_large to 527 sentences for GPT-2_large. Likewise, the threshold regression models indicate a diminishing marginal return for EPS with point estimates between 1.36 and 1.38.
    CONCLUSIONS: Relatively modest sample sizes can be used to fine-tune LLMs for NER tasks applied to biomedical text, and training data entity density should representatively approximate entity density in production data. Training data quality and a model architecture\'s intended use (text generation vs text processing or classification) may be as, or more, important as training data volume and model parameter size.
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  • 文章类型: Journal Article
    尽管Web的使用在研究过程的每个步骤中都带来了重大进展,这也带来了一些方法论上的挑战。
    本文介绍了欧洲性医学学会关于与基于网络的性医学研究相关的关键方法学问题的立场声明。
    作者在性医学中使用基于Web的研究方法对文章进行了系统的范围审查。为了创建语句,作者处理了来自研究方法的数据,并制定了最终声明,在小组中达成了100%的一致。
    欧洲性医学学会在以下领域提供了声明:感兴趣人群的定义,选择感兴趣的人群,数据收集质量,响应率,自我报告问卷,同意,和法律义务。
    研究人员应证明互联网人群与感兴趣人群的相关性;应清楚地描述他们如何识别研究参与者;应选择和采用避免恶作剧的具体措施;应明确描述反应和完成率的计算过程以及相关含义;应验证在线的传统性健康问卷,如果可能,多语言使用;在基于网络的研究中不应该忽视同意;并且需要了解保护匿名的技术措施和法律义务。
    建议研究人员在他们的小组中包括训练有素的计算机科学家,对他们在收集方面的法律义务有很好的理解,存储和传播个人数据,并考虑到基于网络的研究的挑战来设计他们的研究。
    纳入研究的异质性和大多数研究的方法学质量低是一个限制,这也表明了这项研究的重要性以及对基于网络的研究指南的需求。
    如果研究人员不注意他们需要解决的方法学挑战,大量不受控制的样本可能会对研究质量构成威胁,并增加偏倚。
    UNASSIGNED: Although the use of the Web has brought major advances in every step of the research process, this also comes with several methodological challenges.
    UNASSIGNED: The article presents the European Society for Sexual Medicine\'s position statements on key methodological concerns relative to Web-based research in sexual medicine.
    UNASSIGNED: The authors conducted a systematic scoping review of articles using Web-based research methods in sexual medicine. For the creation of the statements, the authors processed the data from the methodology of the studies and formulated the final statements reaching 100% agreement in the group.
    UNASSIGNED: European Society for Sexual Medicine statements were provided on the following domains: definition of the population of interest, selection of the population of interest, data collection quality, response rate, self-reported questionnaire, consent, and legal obligations.
    UNASSIGNED: Researchers should justify the relevance of the Internet population to the population of interest; should clearly describe how they identified study participants; should select and employ specific measures to avoid hoax; should explicitly describe the process of calculation of response and completion rates as well as the relative implications; should validate traditional sexual health questionnaires for online and, if possible, multilingual use; should not ignore consent in Web-based research; and need to be knowledgeable of the technical measures and legal obligations to protect anonymity.
    UNASSIGNED: Researchers are advised to include trained computer scientists in their group, have a good understanding of their legal obligations as to collecting, storing and disseminating personal data, and design their studies by taking into account the challenges of Web-based research.
    UNASSIGNED: The heterogeneity of the included studies and methodological low quality of most of them was a limitation, which also shows the importance of this study and the need for guidelines regarding Web-based research.
    UNASSIGNED: Large uncontrolled samples could be a threat to the quality of the studies and increase bias if researchers are not mindful of the methodological challenges they would need to account for.
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  • 文章类型: Journal Article
    跨语言,陈述和问题在句法组织上大不相同。要学习每种句子类型的句法属性,学习者可能首先依赖非句法信息。本文分析了针对婴儿的问题和陈述之间的韵律差异,以确定可能提供哪种线索。我们预测,根据出现在wh-questions中的第一个单词,将会有显著的差异(例如,两个封闭类单词;意思是很少变化的类别中的单词)与语句中第一个单词的多样性相比。我们测量了F0,持续时间,在CHILDES数据库的Brent语料库中,来自13个母子双子的自然语音中的前两个单词和自然语音中的前两个单词的强度。结果发现,当第二个单词是开放式单词而不是封闭式单词时,句子类型之间的差异更大。提示婴儿可以用来区分句子类型的话语初始位置中韵律和句法信息之间的关系。
    Cross-linguistically, statements and questions broadly differ in syntactic organization. To learn the syntactic properties of each sentence type, learners might first rely on non-syntactic information. This paper analyzed prosodic differences between infant-directed wh-questions and statements to determine what kinds of cues might be available. We predicted there would be a significant difference depending on the first words that appear in wh-questions (e.g., two closed-class words; meaning words from a category that rarely changes) compared to the variety of first words found in statements. We measured F0, duration, and intensity of the first two words in statements and wh-questions in naturalistic speech from 13 mother-child dyads in the Brent corpus of the CHILDES database. Results found larger differences between sentence-types when the second word was an open-class not a closed-class word, suggesting a relationship between prosodic and syntactic information in an utterance-initial position that infants may use to make sentence-type distinctions.
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  • 文章类型: Journal Article
    UNASSIGNED:需要能够掌握世卫组织/儿童基金会/人口基金标准护理质量措施的评估工具。这项研究旨在评估每个母亲每个新生儿(EMEN)工具捕获世卫组织/儿童基金会/人口基金孕产妇和新生儿质量改善标准指标的能力。
    UNASSIGNED:应用了使用EMEN质量评估框架的定量研究。将六个EMEN工具与世卫组织/儿童基金会/人口基金的孕产妇和新生儿质量改进标准进行了比较。使用表格和数字进行描述性统计分析。
    未经评估:总的来说,在所有EMEN工具中,100%(164个中的164个)输入,94%(110个中的103个)输出,97%(78个中的76个)的结局指标被评估.标准2措施,即,可操作的信息系统,100%(17个中的17个)被管理层访谈完全评估,标准4-6措施的72%到96%,即,客户的护理体验,由退出面试工具完成。
    UNASSIGNED:EMEN工具可以合理衡量世卫组织/儿童基金会/人口基金的质量标准。这些工具具有很高的能力,可以捕获有利的政策环境和用于衡量护理质量的其他可用工具未涵盖的护理措施的经验。
    UNASSIGNED: Assessment tools with the ability to capture WHO/UNICEF/UNFPA standard quality-of-care measures are needed. This study aimed to assess the ability of Every Mother Every Newborn (EMEN) tools to capture WHO/UNICEF/UNFPA maternal and newborn quality improvement standard indicators.
    UNASSIGNED: A quantitative study using the EMEN quality assessment framework was applied. The six EMEN tools were compared with the WHO/UNICEF/UNFPA maternal and newborn quality improvement standards. Descriptive statistics analysis was carried out with summaries using tables and figures.
    UNASSIGNED: Overall, across all EMEN tools, 100% (164 of 164) input, 94% (103 of 110) output, and 97% (76 of 78) outcome measures were assessed. Standard 2 measures, i.e., actionable information systems, were 100% (17 of 17) completely assessed by the management interview, with 72% to 96% of standard 4-6 measures, i.e., client experiences of care, fulfilled by an exit interview tool.
    UNASSIGNED: The EMEN tools can reasonably measure WHO/UNICEF/UNFPA quality standards. There was a high capacity of the tools to capture enabling policy environment and experiences of care measures not covered in other available tools which are used to measure the quality of care.
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  • 文章类型: Journal Article
    大多数国家手动收集证人和受害者的证据,面试官在面试过程中吸收受访者所说的话,以产生证据陈述。这项探索性研究检查了在现实世界调查中产生的证据陈述的质量。将抄录的证人/受害者访谈(N=15)与访谈官员产生的书面声明进行比较,并由受访者作为准确记录签名。设计了一种编码协议,以评估受访者在口头采访中所说的信息与书面声明中所报告的信息之间的一致性。陈述包含许多错误,包括遗漏,扭曲,以及口头采访中未提及的信息。这项探索性工作突出了未来研究重点的重要领域。
    Most countries compile evidence from witnesses and victims manually, whereby the interviewer assimilates what the interviewee says during the course of an interview to produce an evidential statement. This exploratory research examined the quality of evidential statements generated in real world investigations. Transcribed witness/victim interviews (N = 15) were compared to the resultant written statements produced by the interviewing officer and signed as an accurate record by the interviewee. A coding protocol was devised to assess the consistency of information between what was said by the interviewee in the verbal interview and what was reported in the written statement. Statements contained numerous errors including omissions, distortions, and the inclusion of information not mentioned in the verbal interview. This exploratory work highlights an important area for future research focus.
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  • 文章类型: Journal Article
    目的:机构声明的效用据说可以提供一个机构目标的清晰和强化。不幸的是,也可以说,这些陈述在所描述的词语和教师的环境之间存在明显的错位,学生,学员,和彩色脸的工作人员。这项研究的目的是分析学术医学机构声明,以回应2020年乔治·弗洛伊德被谋杀后的种族紧张局势,其中,以及随后全国范围内反对警察暴行的抗议活动。
    方法:我们对乔治·弗洛伊德被谋杀后学术医疗中心产生的机构陈述进行了清单内容分析。我们使用清单内容分析来深入了解制度声明如何将结构性种族主义与学术医学的使命联系起来。我们收集并检查了26个学术医学中心的机构声明。选择参数包括公开可用的声明,并由机构在2周内发布。我们进行了四个阶段的分析:去文化,重新语境化,分类,和编译。为了更好地理解语句的集合,我们根据最突出的讨论主题绘制了这些机构声明。
    结果:总体而言,机构声明通过三个子主题讨论了种族主义:确定健康差异的种族影响,呼吁采取行动解决种族主义问题,和偏心种族。还注意到缺少语言。第二,机构声明通过表达与学术医学使命的明确联系来唤起机构价值,命名社会正义的价值,强调社区的概念。最后,机构声明主要讨论了与种族主义或机构价值观有关的公共卫生。
    结论:我们的研究确定了与学术医学使命急需的重新联系。收回社会使命将是重新确立机构行动基础的重要一步。这一呼吁最终将改善边缘化人口的健康和福祉。
    OBJECTIVE: The utility of institutional statements is said to provide clarity and reinforcement of an institution\'s goal. Unfortunately, it can also be argued that these statements are in clear misalignment between the words described and the environments that faculty, students, trainees, and staff of color face. The purpose of this study was to analyze academic medicine institutional statements that responded to 2020 racial tensions following the murders of George Floyd, among others, and the subsequent nationwide protests against police brutality.
    METHODS: We conducted a manifest content analysis of institutional statements generated by academic medical centers after George Floyd\'s murder. We used manifest content analysis to gain insights into how institutional statements connect structural racism to the mission of academic medicine. We collected and examined institutional statements from 26 academic medicine centers. Selection parameters included statements that were publicly available and published by the institutions during a 2-week period. We conducted a four-stage analysis: decontextualization, recontextualization, categorization, and compilation. To better understand the collection of statements, we plotted these institutional statements according to the most salient discussed themes.
    RESULTS: Overall, institutional statements discussed racism through three subthemes: identifying the racial implications of health disparities, issuing a call to action to address racism, and decentering race. Absent language is also noted. Second, institutional statements evoked institutional values by expressing an explicit connection with the academic medicine mission, naming the value of social justice, and emphasizing the concept of community. Finally, institutional statements largely discussed public health in connection with racism or with institutional values.
    CONCLUSIONS: Our study determines a much-needed reconnection to the mission of academic medicine. Reclaiming the social mission will be a major step toward recentering the foundation of institutional actions. This call is what ultimately will improve the health and well-being of marginalized populations.
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  • 文章类型: Journal Article
    尽管临床试验提供了证据,关于三联吸入疗法的使用存在一些不确定性和争议.为了评估专门呼吸单位的临床实践,在西班牙使用1年后实施了一项关于使用单一吸入器固定剂量三联疗法的Delphi共识文件.
    COPD专家科学委员会定义了一个主题指数,指导了系统的文献综述,并帮助设计了德尔菲问卷。这是在2019年4月至6月期间发送给其他45名COPD专家的。使用李克特量表分两轮测试了对58项陈述的同意/分歧。当≥80%的小组成员同意时,答复被归类为共识;当达到≥66%的同意程度时,答复被归类为多数;如果协议<66%,则存在分歧。
    两轮过后,44.44%的声明达成共识,14.81%达到多数,40.74%出现分歧。小组成员一致认为,从双重支气管扩张升级应基于表型,旨在防止恶化,但不是为了改善症状。在吸入型皮质类固醇组合中添加抗毒蕈碱药物可改善肺功能,症状和恶化预防。主要的安全问题包括与支气管扩张剂治疗相比,肺炎的风险增加,具有类似的心血管效应。根据血液嗜酸性粒细胞计数或阻塞严重程度,对患者类型的反应没有达成共识。
    小组成员的共识程度低可能反映了严重COPD管理的复杂性。此处提供的信息可能对为COPD患者实施个性化医疗的临床医生有用。
    Despite the evidence provided by clinical trials, there are some uncertainties and controversies regarding the use of triple inhaled therapy. With the aim of evaluating clinical practice in specialized respiratory units, a Delphi consensus document was implemented on the use of single-inhaler fixed-dose triple therapies after 1 year of use in Spain.
    A scientific committee of COPD experts defined a thematic index, guided a systematic literature review and helped design the Delphi questionnaire. This was sent to the other 45 COPD experts between April and June 2019. Agreement/disagreement on 58 statements was tested in two rounds using a Likert scale. Replies were classified as a consensus when ≥80% of the panelists agreed; a majority when a degree of agreement of ≥66% was reached; and divergence if agreement was <66%.
    After two rounds, 44.44% of the statements reached consensus, 14.81% reached majority and 40.74% were divergent. Panelists agreed that escalating from double bronchodilation should be phenotype-based and aim to prevent exacerbations but not for improving symptoms. The addition of an antimuscarinic to inhaled corticosteroids combinations achieves improvement in lung function, symptoms and exacerbation prevention. Main safety concerns included the increased risk of pneumonia as compared to bronchodilator therapies, with similar cardiovascular effects. There was no consensus agreement on patient type response based on blood eosinophil counts or obstruction severity.
    The low degree of consensus among panelists may reflect the complexity of severe COPD management. The information provided here may be useful to clinicians implementing personalized medicine for COPD patients.
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  • 文章类型: Journal Article
    An implementation plan was developed in conjunction with the publication of the European Statements of Hospital Pharmacy. Subsequently a baseline survey on the status of the Statements was conducted with specific questions on awareness, capability and capacity seen as crucial to informing future implementation plans. The baseline survey showed that, 18 months after agreement at the European Summit of Hospital Pharmacy, hospital pharmacists across Europe have a growing awareness of the Statements. There is a significant variation across Europe with awareness levels ranging from 100% to less than 30%. Capacity within European Healthcare systems to achieve implementation is challenging with less than 10% of respondents in most countries indicating sufficient capacity to implement the services described in the Statements. Staff skills and experience to implement the changes was identified by respondents at less than 20% in many countries. The implementation plan will need to be constantly updated and modified to sustain progress.
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  • 文章类型: Journal Article
    Background/Objective: Criteria-Based Content Analysis (CBCA) is the tool most extensively used worldwide for evaluating the veracity of a testimony. CBCA, initially designed for evaluating the testimonies of victims of child sexual abuse, has been empirically validated. Moreover, CBCA has been generalized to adult populations and other contexts though this generalization has not been endorsed by the scientific literature. Method: Thus, a meta-analysis was performed to assess the Undeutsch Hypothesis and the CBCA checklist of criteria in discerning in adults between memories of self-experienced real-life events and fabricated or fictitious memories. Results: Though the results corroborated the Undeutsch Hypothesis, and CBCA as a valid technique, the results were not generalizable, and the self-deprecation and pardoning the perpetrator criteria failed to discriminate between both memories. The technique can be complemented with additional reality criteria. The study of moderators revealed discriminating efficacy was significantly higher in filed studies on sexual offences and intimate partner violence. Conclusions: The findings are discussed in terms of their implications as well as the limitations and conditions for applying these results to forensic settings.
    Antecedentes/Objetivo: El Criteria-Based Content Analysis (CBCA) constituye la herramienta mundialmente más utilizada para la evaluación de la credibilidad del testimonio. Originalmente fue creado para testimonios de menores víctimas de abuso sexual, gozando de amparo científico. Sin embargo, se ha generalizado su práctica a poblaciones de adultos y otros contextos sin un aval de la literatura para tal generalización. Método: Por ello, nos planteamos una revisión meta-analítica con el objetivo de contrastar la Hipótesis Undeutsch y los criterios de realidad del CBCA para conocer su potencial capacidad discriminativa entre memorias de eventos auto-experimentados y fabricados en adultos. Resultados: Los resultados confirman la hipótesis Undeutsch y validan el CBCA como técnica. No obstante, los resultados no son generalizables y los criterios auto-desaprobación y perdón al autor del delito no discriminan entre ambas memorias. Además, se encontró que la técnica puede ser complementada con criterios adicionales de realidad. El estudio de moderadores mostró que la eficacia discriminativa era significativamente superior en estudios de campo en casos de violencia sexual y de género. Conclusiones: Se discute la utilidad, así como las limitaciones y condiciones para la transferencia de estos resultados a la práctica forense.
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  • 文章类型: Journal Article
    UNASSIGNED: The multidisciplinary management of oncologic patients is identified as the bottom line element of quality in tumor care.
    UNASSIGNED: In 2015, 7 Italian scientific societies representing the specialists involved in the diagnosis and treatment of genitourinary tumors joined efforts in the Italian uro-oncologic multidisciplinary teams (MDTs) project. The aims were to promote the reorganization of genitourinary cancer care, switching to a multidisciplinary approach, reach a consensus on the core elements for the setup of MDTs in genitourinary oncology, and support health policy makers and managers in remodeling of the assistance and care of uro-oncologic patients on a national level.
    UNASSIGNED: The first activity was the setup of 5 working groups, given the task of exploring selected topics: general principles, organization of MDTs, minimal requirements, economic evaluation, and relations with authorities. The groups participated in the writing of a document that was approved by the scientific societies and published on their web sites. Moreover, a few items summarizing the extensive document were approved in the first MDT Consensus Conference held in Milan in December 2015.
    UNASSIGNED: The experience of this initial phase led to the opening of the team to other professionals and societies, in line with a correct management of patients with genitourinary tumors, which need a multidisciplinary as well as a multiprofessional approach with emerging techniques and procedures, and with a new project work package on genitourinary paths of care and indicators.
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