Two Physicians Were Asked to Independently Classify 250 Ultrasounds as Positive

question 2

Multiple Choice

Two physicians were asked to independently classify 250 ultrasounds as positive or negative.The comparison of their classification is shown in the following table.What is the simple percent agreement between the two physicians out of the total? Use the following table to answer the question. Number of Positive and Negative Cases by Physician 1 and Physician 2
$$\begin{array}{r}{ \text { Physician 1 } }\quad\quad\\\begin{array} { | l | l | l | } \hline{ \text { Physician } 2 } \\\hline & \text { Positive } & \text { Negative } \\\hline \text { Positive } & 45 & 15 \\\hline \text { Negative } & 25 & 165 \\\hline\end{array}\end{array}$$

• A) 24%
• B) 28%
• C) 53%
• D) 67%
• E) 84%

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Definitions:

Light

A form of electromagnetic radiation visible to the human eye, responsible for the sense of sight.

Absolute Threshold

The minimum stimulus intensity that an organism can detect at least 50% of the time.

Subliminal Stimulation

Sensory stimulation below a person’s absolute threshold for conscious perception.

Ancient Greek

Relating to the language, culture, or history of Greece, particularly during the classical period before the Roman conquest.