If You Were Going to Set Up a Clinical Trial

question 136

Multiple Choice

If you were going to set up a clinical trial of a new chemotherapy drug that would be used in addition to traditional treatment for prostate cancer,who would you use as the control group for your experiment?

• A) patients with prostate cancer who received no treatment
• B) patients with prostate cancer who received traditional treatment alone
• C) patients with prostate cancer who were given the trial drug but no traditional treatment
• D) patients with prostate cancer who received traditional treatment plus the trial drug
• E) healthy patients with no prostate cancer

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Definitions:

Chi-Squared Distributed

Describes a statistical distribution where the sum of the squares of a number of independent standard normal random variables is chi-squared.

Degrees of Freedom

The number of independent values or quantities that can vary in the analysis of statistical parameters.

Randomized Block Experiment

An experimental design that groups participants into blocks based on certain characteristics before randomly assigning them to treatments, improving the experiment's accuracy by reducing variance.

Ordinal

Pertains to a categorical ranking where the order among values is significant but not the distance between them.