Ezaz Ahmad

3 Questions 3 Answers 0 Followers

Questions related from Ezaz Ahmad

Do I really need to care if one of my covariate fails to meet PH assumption in cox ph regression?

The main independent variable is A, but I want to adjust the model with a covariate B. When I check the PH assumption, A holds but B does not. Do I need to run a Proportional odds or an AFT model...

28 September 2021 5,357 2 View

What type of EDA one should do before starting modelling in a longitudinal study?

Hi everyone, I would like to know how do you conduct EDA on a longitudinal study. For example, If I want to study the impact of pred1 (categorical - 3 levels) and pred2 (continuous) on the...

22 January 2020 4,861 3 View

Interpretation of interaction in the mixed effect model?

Hi, I have categorized 3 my time points (ftime0, ftime1, ftime2) and treatment type (access_typeAVF, access_typeAVG). Treatment is given after time point 0 (or baseline). Serials (subject) are...

06 January 2020 7,802 5 View