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Genetic Screens02:46

Genetic Screens

5.6K
Genetic screens are tools used to identify genes and mutations responsible for phenotypes of interest. Genetic screens help identify individuals or a group of people at risk of developing  genetic diseases and help them with early intervention, targeted therapy, and reproductive options.
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which...
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Regression Toward the Mean01:52

Regression Toward the Mean

6.8K
Regression toward the mean (“RTM”) is a phenomenon in which extremely high or low values—for example, and individual’s blood pressure at a particular moment—appear closer to a group’s average upon remeasuring. Although this statistical peculiarity is the result of random error and chance, it has been problematic across various medical, scientific, financial and psychological applications. In particular, RTM, if not taken into account, can interfere when...
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Errors occurring during blood pressure monitoring01:25

Errors occurring during blood pressure monitoring

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Blood pressure monitoring is a crucial clinical procedure in diagnosing and managing various cardiovascular conditions. Despite its significance, the accuracy of blood pressure measurements can be compromised by multiple factors, potentially leading to either falsely high or low readings. These inaccuracies are critical as they can significantly impact patient care. So, it is vital to understand these challenges deeply and adopt strategic approaches to minimize errors.
Several factors...
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Halo Effect01:27

Halo Effect

391
The halo effect is a cognitive bias in which an individual's overall impression influences judgments about their specific traits. This psychological phenomenon leads people to associate positive characteristics with those they perceive as generally good and negative characteristics with those they view as bad. This effect is particularly influential in social perception, professional evaluations, and decision-making processes.The Psychological Basis of the Halo EffectThe halo effect is rooted...
391
Bias in Epidemiological Studies01:29

Bias in Epidemiological Studies

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Biases can arise at various stages of research, from study design and data collection to analysis and interpretation. Recognizing and addressing these biases is essential to ensure the validity and reliability of epidemiological findings.Broadly speaking, biases in epidemiology fall into three main categories: selection bias, information bias, and confounding. A more detailed description of possible biases is:  
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Strategies for Assessing and Addressing Confounding01:25

Strategies for Assessing and Addressing Confounding

349
Confounding is a critical issue in epidemiological studies, often leading to misleading conclusions about associations between exposures and outcomes. It occurs when the relationship between the exposure and the outcome is mixed with the effects of other factors that influence the outcome. Given that, addressing confounding is of high importance for drawing accurate inferences in research.
Confounding can be addressed at both the design phase of a study and through analytical methods after data...
349

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相关实验视频

Updated: Jan 12, 2026

Universal Screening for Prevention of Reading, Writing, and Math Disabilities in Spanish
14:43

Universal Screening for Prevention of Reading, Writing, and Math Disabilities in Spanish

Published on: July 18, 2020

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关于对查率的错误关注的评论

Frederic W Grannis1, Bruce Pyenson2

  • 1City of Hope National Medical Center, Duarte, California.

Cancer prevention research (Philadelphia, Pa.)
|November 3, 2025
PubMed
概括

肺癌查率在78-79岁的成年人中最高,尽管Medicare排除了这一点. 然而,行为风险因素监测系统 (BRFSS) 等数据收集方法中的偏差可能会扭曲这些发现,质疑采用措施的可靠性.

科学领域:

  • 公共卫生 公共卫生
  • 流行病学 流行病学
  • 医疗保健服务研究 医疗服务研究

背景情况:

  • 肺癌查指南和医疗保险覆盖范围影响了查的普及.
  • 之前使用各种数据源的研究报告了不同的查吸收率.
  • 行为风险因素监测系统 (BRFSS) 是用于公共卫生监测的广泛使用的数据源.

研究的目的:

  • 用BRFSS数据分析不同年龄组的肺癌查吸收率.
  • 评估从BRFSS数据中得出的查采用度的可靠性.
  • 为评估肺癌查计划的有效性提出替代指标.

主要方法:

  • 对行为风险因素监测系统 (BRFSS) 数据的分析.
  • 肺癌查普及率的不同年龄人口统计数据的比较.
  • 对自我报告的健康调查数据中潜在偏差的批判性评估.

主要成果:

  • 78-79岁的成年人显示肺癌查率最高 (32%).
  • 与使用其他数据源的先前研究相比,BRFSS数据表明查采用率更高.
  • 人们对BRFSS数据的社会可取性,回忆偏见和受访者混表示担忧.

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Highlighting and Reducing the Impact of Negative Aging Stereotypes During Older Adults' Cognitive Testing
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Highlighting and Reducing the Impact of Negative Aging Stereotypes During Older Adults' Cognitive Testing

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相关实验视频

Last Updated: Jan 12, 2026

Universal Screening for Prevention of Reading, Writing, and Math Disabilities in Spanish
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Universal Screening for Prevention of Reading, Writing, and Math Disabilities in Spanish

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Using an Automated Hirschberg Test App to Evaluate Ocular Alignment
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Using an Automated Hirschberg Test App to Evaluate Ocular Alignment

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结论:

  • 赫尔南德斯关于肺癌查采用的结论可能由于数据偏差而不可靠.
  • 从BRFSS数据中得出的吸收措施的有用性是可疑的.
  • 在行政数据中测量查检测到的肺癌,为健康结果提供了更强大的联系.