I work at a hard drive manufacturer. In my project, we have huge sets of testing data of hard drives. Most of them are time-varying covariates.
My colleges are using cox regression. I doubt it.
These testing parameters (covariates) are time-varying. They don't know how to interpret the coefficients estimated.
Can they use Cox / survival for these time-varying covariates?
If yes, how do we interpret the coefficients of these time-varying covariates?
Can we use joint modeling of survival and longitudinal data for it?
If not, what do you guys think is the best way to extract information from testing data and relate it to survival analysis?
Do you know any good resource for researches like this?