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Updated: Jul 5, 2026

Fundus Photography as a Convenient Tool to Study Microvascular Responses to Cardiovascular Disease Risk Factors in Epidemiological Studies
10:11

Fundus Photography as a Convenient Tool to Study Microvascular Responses to Cardiovascular Disease Risk Factors in Epidemiological Studies

Published on: October 22, 2014

ケースマネジメントの有無にかかわらず,電子ビームトモグラフィの動機付け,行動の変化,心血管リスクプロファイルへの影響:ランダム化制御試験

Patrick G O'Malley1, Irwin M Feuerstein, Allen J Taylor

  • 1Department of Medicine, Walter Reed Army Medical Center, Washington, DC 20307-5001, USA. patrick.omalley@amedd.army.mil

JAMA
|May 8, 2003
PubMed
まとめ

電子ビームトモグラフィー (EBT) のスクリーニングは,心血管疾患のリスクを改善しませんでした. 集中症例管理 (ICM) は,1年以上にわたってリスク要因の管理において通常のケアよりも効果的であった.

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What is an Experiment?

An experiment is a planned activity carried out under controlled conditions. The purpose of an experiment is to investigate the relationship between two variables. When one variable causes change in another, we call the first variable the explanatory or independent variable. The affected variable is called the response or dependent variable. In a randomized experiment, the researcher manipulates values of the explanatory variable and measures the resulting changes in the response variable. The...
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
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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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Exercise Stress Test

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