Cox proportional hazards models for overall mortality prediction by demographic characteristics and clinical presentations.

a<p>Unadjusted hazard ratios and 95% confidence intervals for variables that might predict overall mortality (<i>p</i><0.1).</p>b<p>Results of stepwise selection for a fitted cox regression model (Goodness-of-fit, Chi square = 214.226, <i>p</i><0.001). Variables were included in the final model for a p<0.05 and were excluded if p<0.1.</p>c<p>The hazard of dying for patients with malignancy or dyspnea attenuated after 6 months and averaged hazard ratios were reported.</p><p>HR, hazard ratio; CI, confidence interval.