A Study Compares the Detection of Colon Polyps in 50

question 423

Multiple Choice

A study compares the detection of colon polyps in 50 subjects by using both CT colonography and conventional colonoscopy (gold standard) .  As a part of the study, 2 independent radiologists assess the CT images to diagnose polyps.  Each radiologist is blinded to the other radiologist's reading.  The kappa statistic for these raters is 0.73.  Which of the following does the kappa statistic best describe?

• A)Power
• B)Reliability
• C)Specificity
• D)Statistical significance
• E)Validity

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Definitions:

Executive Stage

The period in middle adulthood when people take a broader perspective than earlier, including concerns about the world.

Middle Adulthood

A life stage that typically describes individuals aged approximately 40 to 65, often characterized by stability, growth in career, and relationships.

Larger Purpose

Refers to an overarching goal or direction in life that gives actions and decisions a greater sense of meaning and significance.

Formal Operational Stage

A period in Piaget's theory marking the ability of adolescents and adults to think abstractly, logically, and systematically.