Elizon Pharmaceuticals, Inc., announced the results of its first human trial of NPI 32101, a topical form of its skin ointment. A total of 225 patients diagnosed with skin irritations were randomly divided into three groups as part of a double-blind, placebo-controlled study to test the effectiveness of the new topical cream. The first group received a 0.5% cream, the second group received a 1.0% cream, and the third group received a placebo. Groups were treated twice daily for a 6-week period.(a)What type of experimental design is this?(b)What is the control group for this study?(c)What is the factor that is set to predetermined levels? What is the treatment?(d)What does it mean for this study to be double-blind?(e)Identify the experimental units.(f)Draw a diagram to illustrate the design.

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Answered: Elizon Pharmaceuticals, Inc., announced…

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Elizon Pharmaceuticals, Inc., announced the results of its first human trial of NPI 32101, a topical form of its skin ointment. A total of 225 patients diagnosed with skin irritations were randomly divided into three groups as part of a double-blind, placebo-controlled study to test the effectiveness of the new topical cream. The first group received a 0.5% cream, the second group received a 1.0% cream, and the third group received a placebo. Groups were treated twice daily for a 6-week period.

(a)What type of experimental design is this?

(b)What is the control group for this study?

(c)What is the factor that is set to predetermined levels? What is the treatment?

(d)What does it mean for this study to be double-blind?

(e)Identify the experimental units.

(f)Draw a diagram to illustrate the design.

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