相关实验视频

Updated: Jul 12, 2025

Visualizing Field Data Collection Procedures of Exposure and Biomarker Assessments for the Household Air Pollution Intervention Network Trial in India
09:33

Visualizing Field Data Collection Procedures of Exposure and Biomarker Assessments for the Household Air Pollution Intervention Network Trial in India

Published on: December 23, 2022

2.3K

一个集群随机对照试验,以减少织工人暴露于棉花粉的呼吸系统影响:MultiTex RCT研究

Asaad Ahmed Nafees1,2, Asad Allana3, Muhammad Masood Kadir3

  • 1Department of Community Health Sciences, Aga Khan University, Karachi, Pakistan asaad.nafees@aku.edu.

The European respiratory journal
|October 19, 2023
PubMed
概括

这项研究表明,一项简单的干预措施有效地减少了暴露于棉花灰尘的织工人的呼吸道症状,并改善了肺功能. 这些发现支持在低收入和中等收入国家实施类似计划.

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Measuring Carbon Content in Airway Macrophages Exposed to Carbon-Containing Particulate Matters05:18

Measuring Carbon Content in Airway Macrophages Exposed to Carbon-Containing Particulate Matters

Published on: July 12, 2024

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Isolation of Mouse Respiratory Epithelial Cells and Exposure to Experimental Cigarette Smoke at Air Liquid Interface10:47

Isolation of Mouse Respiratory Epithelial Cells and Exposure to Experimental Cigarette Smoke at Air Liquid Interface

Published on: February 21, 2011

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相关概念视频

Randomized Experiments01:13

Randomized Experiments

The randomization process involves assigning study participants randomly to experimental or control groups based on their probability of being equally assigned. Randomization is meant to eliminate selection bias and balance known and unknown confounding factors so that the control group is similar to the treatment group as much as possible. A computer program and a random number generator can be used to assign participants to groups in a way that minimizes bias.
Simple randomization
Simple...
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Blinding01:11

Blinding

Blinding is a commonly used method of not telling participants which treatment a subject is receiving. Blinding is a critical part of a randomized control trial or RCT. It reduces the bias that affects the results. In an RCT, blinding is used in the form of a placebo. A placebo effect occurs when untreated subjects falsely believe they have received the treatment and report improved symptoms. A placebo or a dummy treatment is administered to subjects to negate the bias caused by such an effect.
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