In order for epidemiologists to infer that Behavior A causes ...

[anjilletteb]

In order for epidemiologists to infer that Behavior A causes Disease B, they must observe
 
  A) that Behavior A has taken place before Disease B takes place.
  B) a dose-response relationship between Behavior A and Disease B.
  C) a decline in Disease B when Behavior A is eliminated.
  D) all of these relationships between variables exist.

Question 2

A direct, consistent relationship between the independent variable and the dependent variable
 
  A) is an example of the placebo effect.
  B) is an example of the nocebo effect.
  C) defines dose-response relationship.
  D) indicates a transverse relationship.

[princessflame2016]

Answer to Question 1

D

Answer to Question 2

C