Indices

指数
  • 文章类型: Systematic Review
    义齿牌匾,在义齿表面上形成的生物膜,可能导致许多口腔和全身疾病。因此,义齿菌斑的定量评估对于评估义齿佩戴者的义齿卫生非常重要,特别是预防斑块生物膜相关疾病。这次系统审查的目的是,因此,将使用义齿菌斑指数和文献中发表的平版印刷来回顾和总结视觉义齿卫生评估方法。截至2022年3月,英语语言研究在四个电子数据库中发表,PubMed,Medline,Embase,和Cochrane图书馆,被搜查,随后由两名评估人员手动搜索GoogleScholar。审查尽可能遵循系统审查和荟萃分析(PRISMA)的首选报告项目。视觉评估方法的详细信息,包括评估的义齿类型,它的材料和表面,以及使用披露剂,是主要结果。在492项筛查研究中,根据纳入和排除标准纳入74项。其中,60项研究使用了各种义齿菌斑指数,而18项研究使用了平面图像。60项具有指数的研究中的43项和18项具有平面图像的研究中的17项使用了显示剂对斑块进行视觉评估。纳入的研究共描述了21项指标,其中七个对分开的义齿表面进行分级,其余的对整个义齿表面进行分级。在18项平面评估中,一项研究量化了义齿图像上公开的斑块的正方形,16项研究用计算机程序量化了这些像素,一项研究量化了点,像素,和斑块区域的轮廓。总之,由于其简单性,义齿菌斑指数在义齿菌斑评估中似乎很受欢迎。计算机平面评估,虽然更耗时,提供了一个更准确的斑块负荷的评估,因为它是不易主观性和评估者的错误。
    Denture plaque, a biofilm that develops on denture surfaces, could contribute to many oral and systemic afflictions. Hence, a quantitative assessment of denture plaque is important to evaluate the denture hygiene of denture wearers, particularly to prevent plaque biofilm-associated diseases. The aim of this systematic review, therefore, was to review and summarize the visual denture hygiene assessment methods using denture plaque indices and with planimetries published in the literature. English language studies published up to March 2022 in four electronic databases, PubMed, Medline, Embase, and Cochrane Library, were searched, followed by a manual search of Google Scholar by two assessors. The review followed Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) whenever possible. Details of the visual assessment methods, including the types of denture assessed, its materials and its surfaces, as well as the use of a disclosing agent, were the main outcomes. Of 492 screened studies, 74 were included per the inclusion and exclusion criteria. Of these, 60 studies utilized various denture plaque indices while 18 used planimetries. 43 out of 60 studies with indices and 17 out of 18 studies with planimetries used disclosing agents for visual evaluation of plaque. A total of 21 indices were described in the included studies, of which seven graded a divided denture surface, while the remainder graded entire denture surface. Of the 18 planimetric assessments, one study quantified squares of the disclosed plaques on denture images, 16 studies quantified such pixels with computer programs, and a single study quantified points, pixels, and contour of plaque areas. In summary, denture plaque indices appear to be popular in denture plaque assessment due to their simplicity. Computerized planimetric assessment, though more time-consuming, provides a more accurate assessment of plaque load as it is less prone to subjectivity and assessor errors.
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  • 文章类型: Journal Article
    BACKGROUND: The relationship between nonalcoholic fatty liver disease (NAFLD) and obesity-related indices has been analyzed separately thus far, and evidence comparing these indices together is still lacking, especially in China. This study aimed to comprehensively evaluate the predictive performance of anthropometric and metabolic indices to identify NAFLD in Chinese adults.
    METHODS: This study recruited a total of 1748 participants who were 18 years or older in southeastern China. The systolic blood pressure (SBP), diastolic blood pressure (DBP), fasting blood glucose (FBG), total cholesterol (TC), triglycerides (TGs), low-density lipoprotein (LDL), waist circumference (WC), a body shape index (ABSI), atherogenic index of plasma (AIP), abdominal volume index (AVI), body adiposity index (BAI), body mass index (BMI), body roundness index (BRI), conicity index (CI), triglyceride glucose (TyG), waist hip ratio (WHR), and waist height ratio (WHtR) were measured. The association between these indices and NAFLD was analyzed via logistic analyses with odds ratios (ORs). Receiver operating characteristic (ROC) curves and areas under the curve (AUCs) were used to compare the predictive performance of these indices to identify NAFLD.
    RESULTS: BMI had the greatest total AUC (AUC = 0.841) in the ROC curve analysis. However, BRI and BMI both had the best diagnostic ability in males (AUC = 0.812), and BRI had the best diagnostic ability in females (AUC = 0.849). Furthermore, AVI had the greatest AUC for patients who were ~ 20 (AUC = 0.892) and ~ 40 years old (AUC = 0.831), while TyG showed a higher predictive ability than AVI in those who were ~ 60 years old (AUC = 0.766).
    CONCLUSIONS: This study identified sex- and age-specific indices for predicting NAFLD in Chinese subjects. Compared with indices for all age groups, sex- and age-specific indices can provide more accurate assistance for clinical diagnosis and treatment.
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  • 文章类型: Journal Article
    地球的生态系统面临着与人口增长相关的不可持续的社会经济发展带来的严重环境压力,城市化,和工业化。世界各国政府对解决这些问题的可持续性措施感兴趣。遥感允许测量,一体化,并提供有用的信息,以便在不同的时间和空间尺度上进行有效的决策。科学家和决策者赞同广泛使用遥感来弥合学科之间的差距并实现可持续发展。本文对用于支持可持续发展努力的遥感技术进行了广泛的回顾,重点是自然资源管理和自然灾害评估。我们进一步探讨了遥感如何用于交叉领域,以跨学科的方式支持旨在应对可持续发展挑战的决策。遥感技术在传感器分辨率方面有了显著提高,数据采集时间,以及过去几年的可访问性。这项技术也被广泛应用于解决可持续发展中的关键问题和挑战。此外,对文献中提出的用于评估可持续发展目标的各种卫星衍生指数的适用性和局限性的评估表明,这些较旧的指数仍然表现良好。然而,随着传感器辐射测量和分辨率的进步,它们被较少利用,新指数被较少探索。
    The Earth\'s ecosystems face severe environmental stress from unsustainable socioeconomic development linked to population growth, urbanization, and industrialization. Governments worldwide are interested in sustainability measures to address these issues. Remote sensing allows for the measurement, integration, and presentation of useful information for effective decision-making at various temporal and spatial scales. Scientists and decision-makers have endorsed extensive use of remote sensing to bridge gaps among disciplines and achieve sustainable development. This paper presents an extensive review of remote sensing technology used to support sustainable development efforts, with a focus on natural resource management and assessment of natural hazards. We further explore how remote sensing can be used in a cross-cutting, interdisciplinary manner to support decision-making aimed at addressing sustainable development challenges. Remote sensing technology has improved significantly in terms of sensor resolution, data acquisition time, and accessibility over the past several years. This technology has also been widely applied to address key issues and challenges in sustainability. Furthermore, an evaluation of the suitability and limitations of various satellite-derived indices proposed in the literature for assessing sustainable development goals showed that these older indices still perform reasonably well. Nevertheless, with advancements in sensor radiometry and resolution, they were less exploited and new indices are less explored.
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  • 文章类型: Journal Article
    患者报告的结果测量(PROMs)是自我评估的量表和指数,旨在改善对患者主观体验的检测。鉴于有相当数量的PROM可用,重要的是评估它们在特定研究或临床环境中的有效性和有用性。发布的指导方针,基于心理测量标准,不适应临床挑战的复杂性,因为他们追求成分的同质性和对敏感性的关注不足。心理测量学理论扼杀了该领域,并导致常规使用量表被广泛接受,但表现不佳。临床计量学,临床测量科学,可以提供一个更合适的概念和方法框架。本文的目的是概述心理测量模型的主要局限性,并为临床测量患者报告的结果测量(CLIPROM)提供标准。与可靠性相关的特征,灵敏度,有效性,对仪器的临床实用性进行了严格的审查,特别提到临床测量法和心理测量法之间的差异。值得注意的是,PROMs,评级量表,根据心理测量标准开发的指数可能显示相关的临床特性。本论文强调了临床计量方法在选择合适的PROM中的重要性。CLIPROM标准也可以指导新指标的开发和现有PROM在临床环境中使用的验证。
    Patient-reported outcome measures (PROMs) are self-rated scales and indices developed to improve the detection of the patients\' subjective experience. Given that a considerable number of PROMs are available, it is important to evaluate their validity and usefulness in a specific research or clinical setting. Published guidelines, based on psychometric criteria, do not fit in with the complexity of clinical challenges, because of their quest for homogeneity of components and inadequate attention to sensitivity. Psychometric theory has stifled the field and led to the routine use of scales widely accepted yet with a history of poor performance. Clinimetrics, the science of clinical measurements, may provide a more suitable conceptual and methodological framework. The aims of this paper are to outline the major limitations of the psychometric model and to provide criteria for clinimetric patient-reported outcome measures (CLIPROMs). The characteristics related to reliability, sensitivity, validity, and clinical utility of instruments are critically reviewed, with particular reference to the differences between clinimetric and psychometric approaches. Of note is the fact that PROMs, rating scales, and indices developed according to psychometric criteria may display relevant clinimetric properties. The present paper underpins the importance of the clini-metric methodology in choosing the appropriate PROMs. CLIPROM criteria may also guide the development of new indices and the validation of existing PROMs to be employed in clinical settings.
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  • 文章类型: Journal Article
    Three hundred five surface sediment samples from the Bohai Bay in northeastern China were examined for grain size, organic carbon (Corg) concentration, and concentrations of heavy metals (Pb, Zn, Cu, As, Cr, Cd, and Hg). Average metal concentrations were 33 mg/kg (Cu), 27 mg/kg (Pb), 95 mg/kg (Zn), 75 mg/kg (Cr), 0.3 mg/kg (Cd), 13 mg/kg (As), and 72 μg/kg (Hg). In most cases, these concentrations were lower than the China Marine Sediment Quality criteria. Enrichment factors, however, suggested moderate to strong Cd and Hg contamination of the Bohai Bay. The fact that 68.6% of Pollution Load Index (PLI) values exceeded 2 demonstrated strong pollution of the Bohai Bay, Hg contributed the most to the PLI.
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  • 文章类型: Journal Article
    分析了中国福建省三都湾的潮间带沉积物和海水中重金属的浓度以及网育鱼类。测量的元素是As,Cd,Cr,Cu,Hg,Ni,Pb,和Zn。沉积物中发现的Cu和Ni的浓度不符合中国国家海洋沉积物质量标准的第一个标准。Igeo的结果,EF,沉积物样品的CF指数计算清楚地证明了人为污染的原因。渔业的水质标准超过了As,Hg,和Cu。笼养的鱼显示出砷含量增加,Cr,和Zn。发现AsCu和NiZn存在显著关联。这些发现可能与煤炭和原油燃烧以及与电池生产相关的过程有关,钢,和合金。结果指向三都湾以北和西北的河流沿线的工业来源位置。
    Concentrations of heavy metals in sediments and seawaters from the intertidal zone are analyzed along with cage-bred fish in the Sandu Bay of Fujian Province in China. Elements measured are As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn. The concentrations of Cu and Ni found in the sediments do not meet the first standard of the Chinese National Criteria for Marine Sediment Quality. The results of Igeo, EF, and CF index calculations for the sediment samples clearly prove anthropogenic causes of contamination. The water quality standard for fisheries was exceeded by As, Hg, and Cu. Cage-bred fish show increased levels of As, Cr, and Zn. Significant associations are found for AsCu and NiZn. These findings can be related to coal and crude oil combustion and processes associated with the production of batteries, steel, and alloys. The results point to industrial source locations along discharging rivers north and northwest of the Sandu Bay.
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  • 文章类型: Journal Article
    Seven hundred and nine surface sediment samples, along with deeper sediment samples, were collected from Hebei Province along the coastal section of the Bohai Sea, China, and analyzed for grain size, concentrations of organic carbon (Corg) and heavy metals (Cu, Pb, Zn, Cr, Cd, As, and Hg). Results indicated that the average concentrations in the sediments were 16.1 mg/kg (Cu), 19.4 mg/kg (Pb), 50 mg/kg (Zn), 48.8 mg/kg (Cr), 0.1 mg/kg (Cd), 8.4 mg/kg (As), and 20.3 μg/kg (Hg). These concentrations generally met the China Marine Sediment Quality criteria. However, both pollution assessments indicated moderate to strong Cd and Hg contamination in the study area. The potential ecological risk index suggested that the combined ecological risk of the seven studied metals may be low, but that 24.5% of the sites, where sediments were finer and higher in Corg concentration, had high ecological risk in Hg and Cd pollution.
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