I am running a fixed effects hazard ratios model with WinBUGS and I can't tell if I've run into a potential problem.
In the stats output, my mean and median are similar, but generally differ by approximately 0.05. I seem to have the results I should have been expecting, however, and the model runs smoothly.
I need help to understand two things:
Firstly, do differing values for median and mean affect suggest there is an issue with my code? Particularly with regards to convergence. In my opinion this just means the posterior distribution isn't symmetrical.
Secondly, which do I use when analysing these results? Usually I would stick with using the median but I'm starting to question this. The ranking data use the mean, should I use mean for hazard ratios too?
I hope this makes sense.
Thanks in advance.