(Biological Data analysis) All work must be done in R programing In this study a
ID: 3180631 • Letter: #
Question
(Biological Data analysis)
All work must be done in R programing
In this study automated versus manual methods of measuring diastolic blood pressure (DBP) were compared. In this study blood pressure measurements were made before and after playing a video game using a machine and a manual method. A person was classified as a reactor if his or her DBP increased by 10 mm Hg or more after playing the game and non-reactive otherwise. The results are given in the table below. What is the sensitivity of the test? What is the specificity of the test? What is the predictive value positive and predictive value negative of the test?Explanation / Answer
Sensitivity =
Sensitivity =The proportion of they are reactor using automated given they are reactor using manual
=7/(7+6)
=0.54
Specificity = The proportion of they are not reactor using automated given they are not reactor using manual
=51/(51+15)
=0.77
Predictive value of positive test= The proportion of they are reactor using automated amongst reactor automated
=15/(15+4)
=0.79
Predictive value of negative test= The proportion of they are not reactor using automated amongst those who are not reactor in automated
=51/(51+7)
=0.88
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