However, the baseline hazard function, a critical component in absolute risk assessment, is unidentifiable, because the ratio of cases and controls is controlled by the investigators and does not ...

We consider a likelihood ratio method for testing whether a monotone baseline hazard function in the Cox model has a particular value at a fixed point. We derive the asymptotic distribution of the ...

Cox proportional-hazards modeling was used to estimate the relative effect of total hip arthroplasty as compared with hemiarthroplasty on time to death and serious adverse events.