Adel Bishara

4 Questions 12 Answers 0 Followers

Questions related from Adel Bishara

How to draw ROC function from two functions representing the normal and diseased population?

Suppose that I have the normal and diseased populations as functions of a variable (x), how can I use them to draw a receiver operator curve (ROC)? Assuming the two functions are normal...

28 November 2016 5,728 9 View

How much contrast volume is required to fill the pulmonary trunk down to the tertiary branches?

In pulmonary CT angiography, different protocols are applied with different contrast volumes. However, if we know the physiological average amount of CM that fills the pulmonary artery down to the...

29 August 2015 576 5 View

Is a balanced sample mandatory in case-control study in order to assess the risk?

Do I have to make a balanced sample in a case-control study in order to assess the risk of exposure and the relative risk too? I am interested to make a multivariates logistic regression analysis...

11 June 2015 5,217 12 View

How can I use case-control study to calculate the probability of the disease?

I am doing a research on the probability of diagnosing breast cancer given different independent variables. I define the presence of the variable as +ve-test. I am wondering if I can calculate the...

27 May 2015 8,728 8 View