25. In a sample with 169 persons with epilepsy, a depression scale was used to screen for depression and compared to clinician diagnosed depression (gold standard). Of the 132 who tested negative on the depression scale, 6 were clinically diagnosed with depression; and of the 37 who tested positive on the depression scale, 17 were clinically diagnosed with depression. Based on this information, answer the following questions: A. Draw the four-fold table for this scenario: Test result F. Condition According to Gold Standard Absent Present Positive Negative Total Total B. What is the sensitivity of the screening test? C. What is the specificity of the screening test? D. How likely is it that person with epilepsy has depression if they screened positive for it? E. How likely is it that person with epilepsy does not have depression if they screened negative for it? What is the prevalence of clinician diagnosed depression among those with epilepsy in this study? G. What would happen to the positive predictive value if the prevalence of depression was significantly higher than what you calculated in Part 'f'?
25. In a sample with 169 persons with epilepsy, a depression scale was used to screen for depression and compared to clinician diagnosed depression (gold standard). Of the 132 who tested negative on the depression scale, 6 were clinically diagnosed with depression; and of the 37 who tested positive on the depression scale, 17 were clinically diagnosed with depression. Based on this information, answer the following questions: A. Draw the four-fold table for this scenario: Test result F. Condition According to Gold Standard Absent Present Positive Negative Total Total B. What is the sensitivity of the screening test? C. What is the specificity of the screening test? D. How likely is it that person with epilepsy has depression if they screened positive for it? E. How likely is it that person with epilepsy does not have depression if they screened negative for it? What is the prevalence of clinician diagnosed depression among those with epilepsy in this study? G. What would happen to the positive predictive value if the prevalence of depression was significantly higher than what you calculated in Part 'f'?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Answer the following questions
A-
B- what is the sensitivity of the screening test?
C- what is the specificity of te screening test?
D- How likely is it that person with epilepsy has depression if they screened positive for it?
E- How likely is it that person with epilepsy does not have depression if they screened negative for it?
F- what is the prevalence of clinician diagnosed depression among those with epilepsy in this study?
G- what would happen to the positive predictive value of the prevalence of depression was significantly higher than what you calculated in part F?
Transcribed Image Text:25. In a sample with 169 persons with epilepsy, a depression scale was used to screen for depression and
compared to clinician diagnosed depression (gold standard). Of the 132 who tested negative on the
depression scale, 6 were clinically diagnosed with depression; and of the 37 who tested positive on the
depression scale, 17 were clinically diagnosed with depression. Based on this information, answer the
following questions:
A. Draw the four-fold table for this scenario:
Test result
Condition According to Gold Standard
Present
Absent
Positive
Negative
Total
Total
B. What is the sensitivity of the screening test?
C. What is the specificity of the screening test?
D. How likely is it that person with epilepsy has depression if they screened positive for it?
E.
How likely is it that person with epilepsy does not have depression if they screened negative for it?
F. What is the prevalence of clinician diagnosed depression among those with epilepsy in this study?
G. What would happen to the positive predictive value if the prevalence of depression was significantly
higher than what you calculated in Part 'f'?
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