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

Steps in Outbreak Investigation01:18

Steps in Outbreak Investigation

152
In the ever-evolving field of public health, statistical analysis serves as a cornerstone for understanding and managing disease outbreaks. By leveraging various statistical tools, health professionals can predict potential outbreaks, analyze ongoing situations, and devise effective responses to mitigate impact. For that to happen, there are a few possible stages of the analysis:
152
Statistical Methods for Analyzing Epidemiological Data01:25

Statistical Methods for Analyzing Epidemiological Data

408
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:
408
z Scores and Area Under the Curve01:17

z Scores and Area Under the Curve

10.9K
z scores are the standardized values obtained after converting a normal distribution into a standard normal distribution. A z score is measured in units of the standard deviation. The z score tells you how many standard deviations the value x is above (to the right of) or below (to the left of) the mean, μ. Values of x that are larger than the mean have positive z scores, and values of x that are smaller than the mean have negative z scores. If x equals the mean, then x has a z score of...
10.9K
Design Example: Analyzing Capacity Contours for Flood Risk Assessment01:17

Design Example: Analyzing Capacity Contours for Flood Risk Assessment

67
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
67
Causality in Epidemiology01:21

Causality in Epidemiology

463
Causality or causation is a fundamental concept in epidemiology, vital for understanding the relationships between various factors and health outcomes. Despite its importance, there's no single, universally accepted definition of causality within the discipline. Drawing from a systematic review, causality in epidemiology encompasses several definitions, including production, necessary and sufficient, sufficient-component, counterfactual, and probabilistic models. Each has its strengths and...
463
Types of Skewness01:09

Types of Skewness

12.3K
If the frequency distribution of a data set is more inclined towards smaller or larger values, the distribution is said to be skewed. If data values are skewed to the right, then the distribution is called positively skewed. Conversely, if the plot is skewed to the left, the distribution is called negatively skewed.
For instance, in the middle of a pandemic, the geographical distribution of vaccine coverage may be positively skewed towards populations in the global north countries. However,...
12.3K

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

A systematic review of Nipah virus disease epidemiological parameters, outbreaks, and mathematical models.

The Lancet. Infectious diseases·2026
Same author

Measuring the growth of infectious disease modelling publications and their impact on policymaking: A large language model-assisted bibliometric review.

Epidemics·2026
Same author

Assessing human judgment forecasts in the rapid spread of the mpox outbreak: insights and challenges for pandemic preparedness.

BMC infectious diseases·2026
Same author

Estimation of the Ebola outbreak size in the Democratic Republic of the Congo.

The Lancet. Infectious diseases·2026
Same author

Enhancing epidemic forecast usability for policymakers: A global mixed-methods study.

PLOS global public health·2026
Same author

A statistical framework for comparing epidemic forests.

PLoS computational biology·2026

相关实验视频

Updated: Jul 17, 2025

An R-Based Landscape Validation of a Competing Risk Model
05:37

An R-Based Landscape Validation of a Competing Risk Model

Published on: September 16, 2022

2.1K

在转换尺度上对流行病学预测进行评分.

Nikos I Bosse1,2,3, Sam Abbott1,2, Anne Cori4

  • 1Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, United Kingdom.

PLoS computational biology
|August 29, 2023
PubMed
概括

转换流行病学预测数据,如使用日志 (x+1) 转换,通过提供更有意义和可解释的结果来改善模型评估. 该方法增强了用于公共卫生决策的流行病预测模型的评估.

更多相关视频

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

10.7K
Watershed Planning within a Quantitative Scenario Analysis Framework
12:44

Watershed Planning within a Quantitative Scenario Analysis Framework

Published on: July 24, 2016

8.1K

相关实验视频

Last Updated: Jul 17, 2025

An R-Based Landscape Validation of a Competing Risk Model
05:37

An R-Based Landscape Validation of a Competing Risk Model

Published on: September 16, 2022

2.1K
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

10.7K
Watershed Planning within a Quantitative Scenario Analysis Framework
12:44

Watershed Planning within a Quantitative Scenario Analysis Framework

Published on: July 24, 2016

8.1K

科学领域:

  • 流行病学 流行病学
  • 计算生物学 计算生物学
  • 生物统计学 生物统计学

背景情况:

  • 流行病学预测评估对于开发预测模型至关重要.
  • 像CRPS和WIS这样的共同得分测量预测分布与观察.
  • 直接将分数应用于发病率计数可能是有问题的,因为流行病过程的特点.

研究的目的:

  • 在应用预测评估分数之前,研究转换发病率计数的好处.
  • 为了证明转换如何产生更有意义和可解释的结果.
  • 突出使用日志转换数据用于预测评估的优点.

主要方法:

  • 应用连续排列概率得分 (CRPS) 在日志转换的发病率计数上.
  • 利用了来自欧洲COVID-19预测中心的数据和预测.
  • 分析了log(x+1) 转换对模型排名的影响.

主要成果:

  • 日志转换的CRPS提供了概率相对误差,并反映了流行病增长率预测的准确性.
  • 对数转换产生预期的CRPS值,独立于预测量的大小.
  • 转型改变了模型排名,强调错过的上升趋势,并淡化错过的高峰.

结论:

  • 在评估传染病发病率预测模型时,应考虑适当的数据转换,例如自然对数.
  • 对数转换为评估模型性能提供了更强大,更易于解释的方法.
  • 这种方法提高了模型比较的可靠性,并为公共卫生战略提供了信息.