Khaled Tarek

5 Questions 7 Answers 0 Followers

Questions related from Khaled Tarek

A way to test the diagnostic power of different combinations of biomarkers automatically?

Hello, I'm working on a study with 17 different biomarkers, I've assessed the diagnostic power of each of them alone using ROC analysis. However, trying to find different combinations to improve...

12 May 2023 6,991 3 View

A question on coding censored data for survival analysis?

Hello, I have a study where we are measuring the time between full COVID-19 vaccination and infection with the virus. I have 3 kinds of answers A: participants with known vaccination time and...

07 February 2023 6,969 5 View

Duplicate control group in meta analysis?

Hello, I'm conducting a meta analysis on a certain marker in diabetics and healthy controls. Some studies divided the cohort into type 1 and type 2 DM and control group. When inputting the data...

03 August 2021 7,466 4 View

Which post hoc test is more appropriate in the following case?

So I have several plant extracts and I want to measure their effect at different concentrations on cell viability. Each experiment was repeated 3 times so I used ANOVA with each concentration...

30 December 2020 9,963 7 View

In meta-analysis when is it appropriate to use standardized mean difference instead of mean difference?

For example I have some studies that measure effect size in mm2 (Area) and studies that measure it in mm (Diameter), both studies measure the same object. Also, studies measure it at slightly...

16 September 2020 7,661 5 View