相关实验视频
Updated: May 27, 2025

07:51
Video Movement Analysis Using Smartphones ViMAS: A Pilot Study
Published on: March 14, 2017
16.7K
个性化时间变化的非参数模型与移动健康中的应用
Jenifer Rim1, Qi Xu2, Xiwei Tang3
1Department of Statistics, University of California, Irvine, California, USA.
Statistics in medicine
|February 18, 2025
概括
这项研究引入了个性化医疗和移动健康的新个性化时间变化模型. 该方法有效地识别了受试者的子组,并处理缺失的数据,改进了对纵向健康信息的分析.
科学领域:
- 统计 统计 统计 统计
- 生物统计学 生物统计学
- 数据科学数据科学数据科学
背景情况:
- 个性化建模对于个性化医疗和移动健康至关重要.
- 使用纵向数据对特定主体的时间变化的协变效应进行建模具有挑战性.
- 现有的分组方法在移动健康中常见的缺失数据中扎.
研究的目的:
- 提出一个个性化的时间变化的非参数模型,利用子组信息.
- 在移动健康研究中有效处理缺失的数据模式.
- 为治疗建议提供有意义的子组见解.
主要方法:
- 通过使用非参数的B-splines,估计时间变化的协变效应.
- 聚合非参数系数以确定共同的模式和子组.
- 采用交替方向方法的乘数 (ADMM) 算法,以实现高效的实现.
- 灵活地适应B-spline系数的不同尺寸,以处理缺失.
主要成果:
- 拟议的方法有效地通过包含缺少的数据来识别子组.
- 数字研究表明,与现有方法相比,其性能优越.
- 对孕妇健康数据的应用表明,睡眠和活动模式的分析得到了改进.
结论:
- 个性化时间变化的非参数模型为分析复杂的健康数据提供了强大的方法.
- 该方法处理缺失数据和识别子组的能力增强了个性化的健康洞察力.
- 这种方法在改善移动健康研究和个性化干预方面具有重大潜力.
相关概念视频
Mechanistic Models: Compartment Models in Individual and Population Analysis
25
Mechanistic models are utilized in individual analysis using single-source data, but imperfections arise due to data collection errors, preventing perfect prediction of observed data. The mathematical equation involves known values (Xi), observed concentrations (Ci), measurement errors (εi), model parameters (ϕj), and the related function (ƒi) for i number of values. Different least-squares metrics quantify differences between predicted and observed values. The ordinary least...
25
Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving
38
Mechanistic models play a crucial role in algorithms for numerical problem-solving, particularly in nonlinear mixed effects modeling (NMEM). These models aim to minimize specific objective functions by evaluating various parameter estimates, leading to the development of systematic algorithms. In some cases, linearization techniques approximate the model using linear equations.
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
38
Kaplan-Meier Approach
79
The Kaplan-Meier estimator is a non-parametric method used to estimate the survival function from time-to-event data. In medical research, it is frequently employed to measure the proportion of patients surviving for a certain period after treatment. This estimator is fundamental in analyzing time-to-event data, making it indispensable in clinical trials, epidemiological studies, and reliability engineering. By estimating survival probabilities, researchers can evaluate treatment effectiveness,...
79
Methods of Documentation VI: Case Management Model
559
The case management model is a multidisciplinary approach that involves healthcare professionals from diverse disciplines, such as physicians, nurses, therapists, social workers, and pharmacists, working collaboratively to address the various needs of patients. Each healthcare professional brings unique expertise and perspectives, contributing to a more comprehensive understanding of the patient's condition and tailoring treatment plans accordingly.
For example, a patient with a chronic...
For example, a patient with a chronic...
559
Models of Health Promotion and Illness Prevention II
1.5K
The person's health status fluctuates continually, varying from being in good health to becoming ill and returning to being healthy. To understand the concept of illness prevention, there are two models. First, the health-illness continuum model is a graphic representation of an individual's wellness. It states that a person is considered healthy in the absence of physical disease and the presence of good emotional health.
The agent-host-environment model states that disease results...
The agent-host-environment model states that disease results...
1.5K
Models of Health Promotion and Illness Prevention I
2.0K
A model is a theoretical way to understand a concept or an idea. Models can overcome barriers to health regardless of diverse economic and cultural backgrounds. In addition, models make the task easier by providing different ways to approach complex issues. There are two major health promotion models: the health belief model and the health promotion model.
The health belief model (HBM) attempts to predict health-related behavior in specific belief patterns. According to the HBM, a person's...
The health belief model (HBM) attempts to predict health-related behavior in specific belief patterns. According to the HBM, a person's...
2.0K

