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相关概念视频

Observational Studies01:11

Observational Studies

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Observational studies are a type of analytical study where researchers observe events without any interventions. In other words, the researcher does not influence the response variable or the experiment's outcome.
There are three types of observational studies – Prospective, retrospective, and cross-sectional.
Prospective Study
Prospective studies, also known as longitudinal or cohort studies, are carried out by collecting future data from groups sharing similar characteristics. One...
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Cross-Sectional Research01:50

Cross-Sectional Research

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In cross-sectional research, a researcher compares multiple segments of the population at the same time. If they were interested in people's dietary habits, the researcher might directly compare different groups of people by age. Instead of following a group of people for 20 years to see how their dietary habits changed from decade to decade, the researcher would study a group of 20-year-old individuals and compare them to a group of 30-year-old individuals and a group of 40-year-old...
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Convenience Sampling Method00:55

Convenience Sampling Method

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Sampling is a technique to select a portion (or subset) of the larger population and study that portion (the sample) to gain information about the population. Data are the result of sampling from a population. The sampling method ensures that samples are drawn without bias and accurately represent the population.
Convenience sampling is a non-random method of sample selection; this method selects individuals that are easily accessible and may result in biased data. For example, a marketing...
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Data Collection by Experiments01:13

Data Collection by Experiments

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Data collection is a systematic method of obtaining, observing, measuring, and analyzing accurate information. An experimental study is a standard method of data collection that involves the manipulation of the samples by applying some form of treatment prior to data collection. It refers to manipulating one variable to determine its changes on another variable. The sample subjected to treatment is known as “experimental units.”
An example of the experimental method is a public...
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Study Designs in Epidemiology01:20

Study Designs in Epidemiology

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Epidemiological study designs are fundamental tools for investigating the distribution, determinants, and control of health conditions in populations. They help researchers understand the relationships between exposures and outcomes, and they broadly fall into two categories: "observational" and "experimental" studies.
Observational studies are those where the researcher does not intervene but rather observes natural variations. They include cross-sectional, cohort, and...
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Assessment of the Gastrointestinal System II: Health Perception Pattern01:29

Assessment of the Gastrointestinal System II: Health Perception Pattern

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Assessing the gastrointestinal (GI) system is a complex process that begins with collecting subjective data. This data, collected through patient interviews, provides crucial insights into the patient's health history, perception patterns, and lifestyle habits, all contributing significantly to GI health.
Health Perception Patterns
Health perception patterns offer valuable insights into a patient's lifestyle habits and how they may impact their GI health. These patterns include:
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相关实验视频

Updated: Jun 15, 2025

'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake
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'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake

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采样作为一种饮食评估方法:对实施的范围审查.

Joke Verbeke1, Christophe Matthys2,3

  • 1Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism, KU Leuven, Leuven, Belgium.

The international journal of behavioral nutrition and physical activity
|August 27, 2024
PubMed
概括

经验采样方法 (ESM) 为饮食评估提供了一种可行的实时方法. 本综述绘制了其方法,并为开发基于经验抽样的饮食评估方法 (ESDAM) 提供了建议.

关键词:
生态瞬间评估流行病学 流行病学食物日记 食物日记食物频率调查问卷 食物频率问卷移动健康服务提供者营养评估 营养评估

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相关实验视频

Last Updated: Jun 15, 2025

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科学领域:

  • 营养科学 营养科学
  • 方法论 方法论 方法论
  • 公共卫生 公共卫生

背景情况:

  • 准确的饮食摄入量评估至关重要,但对研究和医疗保健来说具有挑战性.
  • 经验采样方法 (ESM) 是一种具有低负担和高可行性的实时数据采集方法.
  • 作为一种替代的饮食评估方法,ESM的潜力尚未得到充分探索.

研究的目的:

  • 探索ESM的实施,作为传统饮食评估方法的替代方案.
  • 在饮食评估中应用ESM的方法考虑.
  • 为制定基于经验采样的饮食评估方法 (ESDAM) 制定建议.

主要方法:

  • 从2012年到2024年进行了一个范围审查,搜索PubMed和Web of Science.
  • 该审查遵循了一个范围审查方法框架.
  • 在选了646篇文章后,包括了39篇描述24项研究的文章.

主要成果:

  • 主要使用ESM进行定性 (n=12) 和半定量 (n=7) 的饮食评估,对定量评估的研究较少 (n=5).
  • 大多数研究评估了选择食物的摄入量;两项研究量化评估了饮食总摄入量.
  • 通常ESM持续时间在4-30天 (最常见的是7天) 之间,固定或半随机抽样在清醒时间和2小时的回忆期.

结论:

  • 通过食品记录或食物频率问卷的方法,ESM可以发展成为ESDAM.
  • 通过ESDAM进行实际饮食摄入量测量需要短时间,密集的采样;习惯性摄入量测量允许更长时间,更少的采样频率.
  • 精心开发ESM采样协议对于优化饮食数据的可行性和准确性至关重要.