相关实验视频

Updated: May 20, 2025

Intense Pulsed Light for the Treatment of Dry Eye Owing to Meibomian Gland Dysfunction

Intense Pulsed Light for the Treatment of Dry Eye Owing to Meibomian Gland Dysfunction

Published on: April 1, 2019

干眼评估和管理研究中安慰剂效应的幅度和预测因素

Katherine Han¹, Aaron T Zhao², Yinxi Yu³

¹School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, Pennsylvania.

Ophthalmology science

|March 27, 2025

概括

干眼评估和管理 (DREAM) 研究发现,干眼疾病的症状和征兆有显著的安慰剂效应. 更严重的干眼疾病预测了更大的安慰剂反应,影响了试验设计.

科学领域:

眼科医生眼科眼科
临床试验临床试验
干眼疾病研究干眼疾病研究

背景情况:

干眼病 (DED) 是一种普遍的疾病,影响着全球数以百万计的人.
了解安慰剂效应对于DED中准确的临床试验解释至关重要.

研究的目的:

量化对干眼症状和迹象的安慰剂效应.
在DED患者中确定安慰剂反应的预测因子.

主要方法:

对DREAM研究的二次分析,一个随机临床试验.
接受安慰剂 (精炼橄油) 的164名参与者在12个月内被评估.
评估的眼睛表面疾病指数 (OSDI),染色,撕裂分解时间 (TBUT),希尔默测试和梅博米腺功能障碍 (MGD).

主要成果:

观察到OSDI得分,结膜染色,角膜染色,TBUT和MGD的显著改善.
较高的基线OSDI得分和缺少类风湿性关节炎预测了更大的OSDI改善.
在基线时更严重的DED预测了更大的MGD改善.

结论:

对于DED的症状和迹象,存在实质性的安慰剂效应.
DED的严重程度会影响安慰剂反应的程度.
未来的DED试验必须在设计和分析中考虑安慰剂效应.

关键词:

干眼疾病是干眼的疾病.干眼的症状干眼的症状干眼的症状干眼的症状避孕药效应是一种安慰剂效应.预测者预测者

更多相关视频

Author Spotlight: Exploring Press Needle Efficacy and Underlying Molecular Pathways

Author Spotlight: Exploring Press Needle Efficacy and Underlying Molecular Pathways

Published on: April 12, 2024

How to Study Placebo Responses in Motion Sickness with a Rotation Chair Paradigm in Healthy Participants

How to Study Placebo Responses in Motion Sickness with a Rotation Chair Paradigm in Healthy Participants

Published on: December 14, 2014

相关概念视频

The Placebo Effect

The Placebo Effect

The placebo effect occurs when people's expectations or beliefs influence or determine their experience in a given situation. In other words, simply expecting something to happen can actually make it happen.

Blind Procedures

Blind Procedures

Ideally, the people who observe and record the children’s behavior are unaware of who was assigned to the experimental or control group, in order to control for experimenter bias. Experimenter bias refers to the possibility that a researcher’s expectations might skew the results of the study. Remember, conducting an experiment requires a lot of planning, and the people involved in the research project have a vested interest in supporting their hypotheses. If the observers knew which...

Blinding

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.