A clinical trial was performed to assess the efficacy of atezolizumab plus bevacizumab (two immunotherapy agents) in patients with hepatocellular carcinoma who underwent surgical resection. The primary endpoint of this study was recurrence free survival (a patient with recurrence or death from any cause was considered to be an event). A regression model was used to determine the adjusted effect (after controlling for important confounding variables) of the treatment on recurrence free survival, what type of generalized linear model is best for this situation? Assume that disease recurrence or death are not rare events.what does a slope of regression line measure