Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Role of Affect in Interpersonal Attraction01:24

Role of Affect in Interpersonal Attraction

219
Affect plays a crucial role in shaping interpersonal evaluations and perceptions. Emotions influence how individuals judge and respond to others, often determining whether interactions are viewed positively or negatively. This effect can manifest directly through interactions with the person in question or indirectly via associations with unrelated emotional experiences.Direct Effects of Affect on AttractionAffect directly influences interpersonal attraction when a person’s behavior...
219
The Influence of Affect on Cognition01:29

The Influence of Affect on Cognition

277
Positive affect significantly influences cognitive processes, including evaluation, memory, creativity, and social judgments. Compared to negative affect, positive emotional states promote more favorable interpretations of stimuli, cognitive flexibility, and heuristic processing. These effects highlight emotions' powerful role in shaping how individuals perceive, remember, and interact with the world.Influence on Evaluation and AttributionWhen individuals experience positive affect, they are...
277
The Influence of Cognition on Affect01:29

The Influence of Cognition on Affect

200
Cognition plays a pivotal role in shaping emotional experiences, as demonstrated by Schachter and Singer’s two-factor theory of emotion. According to this model, emotion arises from a combination of physiological arousal and cognitive interpretation. The body’s physiological response to stimuli is ambiguous and only gains emotional significance through cognitive labeling. For instance, an increased heart rate and adrenaline surge while standing near an attractive person may be...
200
Statistical Methods for Analyzing Epidemiological Data01:25

Statistical Methods for Analyzing Epidemiological Data

938
Epidemiological data primarily involves information on specific populations' occurrence, distribution, and determinants of health and diseases. This data is crucial for understanding disease patterns and impacts, aiding public health decision-making and disease prevention strategies. The analysis of epidemiological data employs various statistical methods to interpret health-related data effectively. Here are some commonly used methods:
938
Background and Environment Affect Phenotype02:27

Background and Environment Affect Phenotype

7.7K
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
7.7K
Statistical Methods to Analyze Parametric Data: ANOVA01:12

Statistical Methods to Analyze Parametric Data: ANOVA

1.6K
Analysis of Variance, or ANOVA, is a powerful statistical technique used to analyze parametric data, primarily in research and experimental studies. It's designed to compare the means of two or more groups, assisting researchers in identifying any significant differences between these group means. There are two main types of ANOVA based on the complexity of the analysis: one-way and two-way.
One-way ANOVA is applied when a single independent variable or factor is scrutinized. It compares...
1.6K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Neuropathologic Correlates of Seizures in Patients With Alzheimer Disease and Dementia With Lewy Bodies.

Neurology·2026
Same author

Residual Pockets as an Endpoint on Periodontal Disease Progression in Supportive Periodontal Care.

Journal of clinical periodontology·2026
Same author

Effectiveness of Multicomponent Interventions in Slowing Progression of CKD Stages G3-G4: A Systematic Review and Meta-Analysis.

Clinical journal of the American Society of Nephrology : CJASN·2026
Same author

Accelerating the Adoption of Best Practice Research in Resuscitation Through Implementation Science: Identifying Gaps and Pathways.

Journal of clinical medicine·2026
Same author

Detection of Vascular Mild Cognitive Impairment in Southeast Asia Using the Visual Cognitive Assessment Test: Machine Learning Analysis From the BIOCIS (Biomarkers and Cognition Study, Singapore).

JMIR aging·2025
Same author

A longitudinal study on physical activity in early Parkinson's disease.

Journal of Parkinson's disease·2025

相关实验视频

Updated: Jan 29, 2026

A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data
10:46

A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data

Published on: December 9, 2015

11.0K

在OHCA注册表中缺少数据:多种计量方法如何影响研究结论-II论文

Stella Jinran Zhan1, Seyed Ehsan Saffari1, Marcus Eng Hock Ong2

  • 1Centre for Biomedical Data Science, Duke-NUS Medical School, Singapore 169857, Singapore.

Journal of clinical medicine
|January 28, 2026
PubMed
概括
此摘要是机器生成的。

多重归算 (MI) 方法,特别是基于树的算法,如CART和RF,在医院外心脏骤停 (OHCA) 注册表中提供了对缺失数据的可靠处理. 这些先进的技术与简单的方法相比,提供了更可靠的统计有效性.

关键词:
旁观者进行心肺复苏 (CPR).紧急医疗服务 紧急医疗服务失踪 失踪 失踪 失踪 失踪 失踪 失踪多重的归算是多重的归算.在医院外发生心脏骤停.

更多相关视频

Using Facial Electromyography to Assess Facial Muscle Reactions to Experienced and Observed Affective Touch in Humans
04:27

Using Facial Electromyography to Assess Facial Muscle Reactions to Experienced and Observed Affective Touch in Humans

Published on: March 15, 2019

11.8K
Comprehensive Autopsy Program for Individuals with Multiple Sclerosis
09:41

Comprehensive Autopsy Program for Individuals with Multiple Sclerosis

Published on: July 19, 2019

12.0K

相关实验视频

Last Updated: Jan 29, 2026

A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data
10:46

A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data

Published on: December 9, 2015

11.0K
Using Facial Electromyography to Assess Facial Muscle Reactions to Experienced and Observed Affective Touch in Humans
04:27

Using Facial Electromyography to Assess Facial Muscle Reactions to Experienced and Observed Affective Touch in Humans

Published on: March 15, 2019

11.8K
Comprehensive Autopsy Program for Individuals with Multiple Sclerosis
09:41

Comprehensive Autopsy Program for Individuals with Multiple Sclerosis

Published on: July 19, 2019

12.0K

科学领域:

  • 生物统计学 生物统计学
  • 流行病学 流行病学
  • 医疗信息学 医疗信息学

背景情况:

  • 临床观察研究中缺少的数据,如医院外心脏骤停 (OHCA) 注册表,可能会显著影响统计学有效性.
  • 完整案例分析 (CCA) 和单一归算方法是不够的,因为它们不考虑归算不确定性.
  • 多重归算 (MI) 是缺失随机 (MAR) 数据的标准,但存在实施挑战.

研究的目的:

  • 在对OHCA数据的关联分析中评估MI的性能.
  • 将MI方法与CCA和单次归算技术进行比较.
  • 为了确定最佳的MI算法来处理OHCA注册表中缺少的数据.

主要方法:

  • 一个使用新加坡OHCA注册数据 (N=13,274) 的模拟框架,其中20%,30%和40%是人工引入的MAR数据.
  • 使用预测平均匹配 (PMM),随机森林 (RF) 和分类和回归树 (CART) 实现MI,使用5-20个归算.
  • 对发出警报和旁观者CPR协会的后勤回归模型中偏差和精度的评估.

主要成果:

  • 与PMM相比,CART表现优越,在失踪级别中产生更准确的系数和稳定的置信区间 (CI).
  • K-Nearest Neighbors (KNN) 提供了类似的点估计,但低估了归算不确定性.
  • PMM表现出更大的偏差和不太稳定的CI,有时表现与CCA相比;MI方法适当地捕捉了比单个归算更广泛的CI的归算不确定性.

结论:

  • 在OHCA研究中MI的有效性高度依赖于所选择的归算算法.
  • 基于树的方法,特别是CART和RF,在OHCA数据分析中被证明是最强大和最一致的.
  • 使用CART/RF的MI建议在OHCA研究中得出可靠的结论,而PMM应谨慎使用.