Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Bias in Epidemiological Studies

Bias in Epidemiological Studies

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:

Factors Affecting Illness

Factors Affecting Illness

When a person's physical, emotional, intellectual, social development or spiritual functioning is compromised, this deviation from a healthy normal state is called illness. Illness creates stress that in turn harms individuals. Irritation, anger, denial, hopelessness, and fear are behavioral and emotional changes an individual experiences in the phases of illness. A variety of factors influence a person's health and well-being.
For instance, risk factors are connected to illness,...

Statistical Methods for Analyzing Epidemiological Data

Statistical Methods for Analyzing Epidemiological Data

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:

Single Nucleotide Polymorphisms-SNPs

Single Nucleotide Polymorphisms-SNPs

A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...

Regulation of Food Intake

Regulation of Food Intake

Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...

Responses to Drought and Flooding

Responses to Drought and Flooding

Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

High-Performance KV<sub>3</sub>Sb<sub>5</sub>/WSe<sub>2</sub> Van Der Waals Photodetectors.

Small (Weinheim an der Bergstrasse, Germany)·2026

Same author

Enhanced reliability in subjective meat color data: A comparative study of Bayesian ordinal vs. frequentist metric methods.

Meat science·2026

Same author

Clade 2.3.4.4b H5N1 HPAIV from Migratory Birds in Beidaihe Wetland, North China.

Viruses·2026

Same author

Pemigatinib for Unresectable or Metastatic Cholangiocarcinoma With Fibroblast Growth Factor Receptor-2 Rearrangement: Results From the Phase III FIGHT-302 Trial.

Journal of clinical oncology : official journal of the American Society of Clinical Oncology·2026

Same author

Portable quantitative detection of serum total cholesterol using smartphone-based image colorimetry.

Clinics (Sao Paulo, Brazil)·2026

Same author

Synergistic residual strain regulation and defect passivation in high-efficiency inverted perovskite solar cells.

Chemical communications (Cambridge, England)·2026

Search research articles

Related Experiment Video

Updated: Sep 5, 2025

Determining Gender-Based Differences in Retinal and Choroidal Thickness in Underweight Individuals via Swept-Source Optical Coherence Tomography

Determining Gender-Based Differences in Retinal and Choroidal Thickness in Underweight Individuals via Swept-Source Optical Coherence Tomography

Published on: December 1, 2023

Impacts of COVID-19 on Nutritional Intake in Rural China: Panel Data Evidence.

Xinru Han¹, Yufei Guo^2,3, Ping Xue¹

¹Institute of Agricultural Economics and Development, Chinese Academy of Agricultural Sciences, Beijing 100081, China.

|July 9, 2022

Summary

The COVID-19 pandemic negatively impacted China’s rural residents' nutritional intake, decreasing energy, carbohydrate, fat, and protein consumption. Low-income groups were disproportionately affected, highlighting the need for nutritional support.

Keywords:

COVID-19 food consumption food security nutritional intake rural China

More Related Videos

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

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

Published on: September 18, 2018

Assessment of Social Transmission of Food Preferences Behaviors

Assessment of Social Transmission of Food Preferences Behaviors

Published on: January 25, 2018

Related Experiment Videos

Last Updated: Sep 5, 2025

Determining Gender-Based Differences in Retinal and Choroidal Thickness in Underweight Individuals via Swept-Source Optical Coherence Tomography

Determining Gender-Based Differences in Retinal and Choroidal Thickness in Underweight Individuals via Swept-Source Optical Coherence Tomography

Published on: December 1, 2023

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

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

Published on: September 18, 2018

Assessment of Social Transmission of Food Preferences Behaviors

Assessment of Social Transmission of Food Preferences Behaviors

Published on: January 25, 2018

Area of Science:

Agricultural Economics
Public Health Nutrition
Epidemiology

Background:

The COVID-19 pandemic posed significant threats to global food and nutrition security.
Rural populations are often more vulnerable to disruptions in food supply chains and income.

Purpose of the Study:

To investigate the impact of the COVID-19 pandemic on the nutritional intake of rural residents in China.
To identify specific macronutrient changes and vulnerable demographic groups.

Main Methods:

Utilized panel data from 2631 households across nine Chinese provinces, collected in 2019 and 2020.
Employed a fixed effects model to analyze the relationship between COVID-19 cases and nutritional intake.

Main Results:

A 100-case increase in county-level COVID-19 infections correlated with significant decreases in per capita intake of dietary energy (1.30%), carbohydrates (1.42%), fats (1.65%), and proteins (1.15%).
The pandemic exerted a significant negative effect on dietary macronutrient intake, particularly within the low-income demographic.

Conclusions:

The study highlights potential insufficient nutrition, nutritional imbalance, and dietary imbalance among low-income rural residents due to the pandemic.
Urgent interventions are needed to address these nutritional challenges and ensure food security for vulnerable populations.