Compare clinical-trial stages, control groups, placebos, double-blind blinding, dosage, side-effect monitoring and effectiveness checks before approval.
The five stages of cancer are used to describe the size and spread of a cancer in a human body.
Anticancer drugs have to undergo double-blind trials before they are used to treat patients.
Describe how a placebo is used in a double-blind trial.
A description that includes the following points:
- correct description of a placebo being given to one group (and the other group receiving (anticancer) drug) (1)
- neither the patient nor the doctor knows whether the patient is receiving (the drug or) the placebo (1)
ACCEPT description of a placebo e.g. has no active ingredient / already known drug / sugar pill / dummy drug
ACCEPT scientist / researcher for doctor
(2)