Author Question: An effectiveness study is associated with which phase of a clinical trial? A) Phase I B) Phase ... (Read 174 times)

jazziefee · **on:** Jul 8, 2018

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 · **Reply #1 on:** Jul 8, 2018

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