Clinical Trials for the Treatment of Heart Disease

Question 1

what is an observational study

Answer 1

observing, not interfering with exposure

Question 2

examples of observational studies

Answer 2

cross sectional
case control
cohot- longitudianal

Question 3

what is an experimental tsudy and give example

Answer 3

does intefere with exposure ie clinical/interventional trial or randomised controlled trial

Question 4

randomised control trial is what kind of design?

Answer 4

parallel, single intervention

Question 5

risk ratio lower than one mean?

Answer 5

its having a protective effect
risk in test/risk in control
RR < 1: The exposure is associated with a reduced risk of the outcome.
RR = 1: There is no difference in risk between the exposed and unexposed groups.
RR > 1: The exposure is associated with an increased risk of the outcome.