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How many false negative were there? Explain the meaning of a false negative for the person tested.

How many false negative were there? Explain the meaning of a false negative for the person tested.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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How many false negative were there? Explain the meaning of a false negative for the person tested.
CHECK YOUR UNDERSTANDING High intracranial pressure (inside the skull) typically is a result of an injury to the head and can be very dangerous. A screening test for high intracranial pressure was proposed many years ago, based on the data in the following observations. This simple and non-invasive test involves observing the retinal vein to see if it is pulsating. Pulsation is normal and so would be considered a negative test result. Pulsation Absent (Positive Test) Pulsation Present Total (Negative Test) High Intracranial Pressure (Condition Present) 43 43 Normal Intracranial Pressure 18 128 146 (Condition Absent) Total 61 128 189 Sources: B. E. Levin, "The Clinical Significante of Spontaneous Pulsations of the Retinal Vein." Archives of Neurology Vol. 35, 1978. pp. 37-40, www.cebm.netindex aspalor1042 US
Transcribed Image Text:CHECK YOUR UNDERSTANDING High intracranial pressure (inside the skull) typically is a result of an injury to the head and can be very dangerous. A screening test for high intracranial pressure was proposed many years ago, based on the data in the following observations. This simple and non-invasive test involves observing the retinal vein to see if it is pulsating. Pulsation is normal and so would be considered a negative test result. Pulsation Absent (Positive Test) Pulsation Present Total (Negative Test) High Intracranial Pressure (Condition Present) 43 43 Normal Intracranial Pressure 18 128 146 (Condition Absent) Total 61 128 189 Sources: B. E. Levin, "The Clinical Significante of Spontaneous Pulsations of the Retinal Vein." Archives of Neurology Vol. 35, 1978. pp. 37-40, www.cebm.netindex aspalor1042 US
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