An effectiveness study is associated with which phase of a ...

[jazziefee]

An effectiveness study is associated with which phase of a clinical trial?
 
  A) Phase I
  B) Phase II
  C) Phase III
  D) Phase IV

Question 2

The sampling strategy that involves the selection of extreme cases is referred to as criterion sampling.
 
  A) True
  B) False

[momtoalll]

Answer to Question 1

D
Feedback:
Clinical trials, which are studies designed to assess the effectiveness of clinical interventions, often involve a series of phases. Phase I is designed to finalize features of the intervention. Phase II involves seeking preliminary evidence of efficacy and opportunities for refinements. Phase III is a full experimental test of treatment efficacy. In Phase IV, the researcher focuses primarily on generalized effectiveness and evidence about costs and benefits.

Answer to Question 2

B

[jazziefee]

Thanks for the timely response, appreciate it

[Alyson.hiatt@yahoo.com]

TYSM