A Group of Medical Researchers Reported on the Accuracy of Using

question 150

Essay

A group of medical researchers reported on the accuracy of using magnetic resonance imaging (MRI) to evaluate ligament sprains and tears on 50 patients. Consecutive patients with acute or chronic knee pain were selected from the clinical practice of one of the researchers and agreed to participate in the study.
Describe the sampling plan used to select study participants.
________________________________________________________
What chance mechanism was used to select this sample of 50 individuals with knee pain?
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Can valid inferences be made using the results of this study?
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Why or why not?
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Definitions:

Expert Power

The influence and authority one possesses as a result of one's expertise, skills, or knowledge.

Referent Power

A form of power that stems from being admired, respected, and liked by others.

Reward Power

The ability of an individual to influence others' behavior by controlling access to desired resources or rewards.

Coercive Power

The ability of a person to influence others' behavior by means of threats, punishment, or sanctions.