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Clinical Trial Summary

The design and interpretation of randomized trials is intimately connected to the use of "placebo". The nature and magnitude of placebo effects, however, is very poorly understood. This study will assess and compare placebo effects and physician interaction effects within a community-acquired common cold model. The goal of this study is to assess two kinds of placebo affects and how physician interaction effects;

1. The effect of receiving blinded placebo, compared to no treatment; and

2. The effect of receiving open-label active Echinacea treatment compared to blinded active treatment.


Clinical Trial Description

As per Brief Summary ;


Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment


Related Conditions & MeSH terms


NCT number NCT00065715
Study type Interventional
Source University of Wisconsin, Madison
Contact
Status Completed
Phase Phase 3
Start date September 2003
Completion date April 2013

See also
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