Discuss the main difference between a case-control study and a ...

[beccaep]

Discuss the main difference between a case-control study and a matched-pairs experiment (other than the fact that one is an observational study and one is an experiment).

Question 2

In an experiment to see if a certain new drug can prevent a second heart attack, other drugs that the experimental units may or may not be taking already for heart related illnesses would be considered to be __________ variables.
 Fill in the blank(s) with correct word

[alexisweber49]

Answer to Question 1

IN A CASE-CONTROL STUDY THE RESEARCHER DOES NOT RANDOMLY ASSIGN TREATMENTS WITHIN PAIRS BUT IS RESTRICTED TO HOW THEY OCCUR NATURALLY (FOR EXAMPLE RIGHT VS LEFT HANDED). ALSO, NOT ALL CASE-CONTROL STUDIES MATCH CASES AND CONTROLS.

Answer to Question 2

INTERACTING