What is the sensitivity of this test? What is the specificity of this test?
MATLAB: An Introduction with Applications
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Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Question
What is the sensitivity of this test? What is the specificity of this test?
![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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F65c38a09-db83-4ad6-9454-840c71887465%2Fd40b7f93-ae5f-4f44-b56f-3b7e53ea8181%2Fz2eu7wl_processed.jpeg&w=3840&q=75)
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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