Experiments & Observational Studies

9/29/99


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Table of Contents

Experiments & Observational Studies

J. Lind, 1753

Experimenting vs. Observing

Terms

Reader’s Guide

Medical Experiments

An Experimental Design

Why Randomize?

Random Sampling is not Randomized Assignment

Was Not Randomized

Vitamin C for Cancer

Linus Pauling 1975:

Mayo Clinic: “Wrong!”

What Went Wrong

Well, duh!

Who knew what when?

Why Blindfold Patient?

Why Blindfold Investigator?

PPT Slide

The main purpose of blindfolding,

Author: ITS

Email: george-woodworth@uiowa.edu

Home Page: http://www.stat.uiowa.edu/~gwoodwor