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*3.71 What is the specificity of the test?

*3.71 What is the specificity of the test?

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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Please answer 3.71 only.
Suppose the self-reports are completely accurate and are representative of the number of eighth-grade students who smoke in the general community. We are considering using an SCN level 2 100 µg/mL as a test criterion for identifying cigarette smokers. Regard a student as positive if he or she smokes one or more cigarettes per week. *3.68 What is the sensitivity of the test for light-smoking students (students who smoke ≤ 14 cigarettes per week)? *3.69 What is the sensitivity of the test for moderate-smoking students (students who smoke 15-44 cigarettes per week)? *3.70 What is the sensitivity of the test for heavy-smoking students (students who smoke ≥ 45 cigarettes per week)? *3.71 What is the specificity of the test? *3.72 What is the PV of the test? *3.73 What is the PV- of the test?
Transcribed Image Text:Suppose the self-reports are completely accurate and are representative of the number of eighth-grade students who smoke in the general community. We are considering using an SCN level 2 100 µg/mL as a test criterion for identifying cigarette smokers. Regard a student as positive if he or she smokes one or more cigarettes per week. *3.68 What is the sensitivity of the test for light-smoking students (students who smoke ≤ 14 cigarettes per week)? *3.69 What is the sensitivity of the test for moderate-smoking students (students who smoke 15-44 cigarettes per week)? *3.70 What is the sensitivity of the test for heavy-smoking students (students who smoke ≥ 45 cigarettes per week)? *3.71 What is the specificity of the test? *3.72 What is the PV of the test? *3.73 What is the PV- of the test?
TABLE 3.10 Self-reported cigarettes smoked in past week None 1-4 5-14 15-24 25-44 45+ Relationship between SCN levels and self-reported cigarettes smoked per week Number of students 1163 70 30 27 19 23 Percent with SCN100 µg/mL 3.3 4.3 6.7 29.6 36.8 65.2 Source: Based on the American Journal of Public Health, 71(12), 1320, 1981.
Transcribed Image Text:TABLE 3.10 Self-reported cigarettes smoked in past week None 1-4 5-14 15-24 25-44 45+ Relationship between SCN levels and self-reported cigarettes smoked per week Number of students 1163 70 30 27 19 23 Percent with SCN100 µg/mL 3.3 4.3 6.7 29.6 36.8 65.2 Source: Based on the American Journal of Public Health, 71(12), 1320, 1981.
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