The Cox (proportional hazards or PH) model is the most commonly used multivariate approach for analysing survival time data in medical research.It is a survival analysis regression model, which ...

Although many factors were prognostic in a univariate test, few were prognostic in a multivariable Cox model . Stage was the most highly predictive of OS post relapse, with increased risk of death for ...

Shown is the hazard ratio from the multivariable Cox proportional-hazards model, with stratification according to sex, chronic lung disease, and body-mass index, and with additional adjustment for ...

Multivariate Cox model demonstrated that patients with first line metastases (hazard ratio (HR) 0.65), metastasis to bone (HR 0.78) and positive ER/PR status (HR 0.58) tend to live longer. Patients ...

We evaluated patient outcomes over a 10-year follow-up period (median, 5.2 years), using a multivariable piecewise Cox regression model. Results Micrometastasis was detected in 30.6 percent of the ...

Visit-to-visit FEV1 variation was found to be a mortality risk factor among 9/11 FDNY rescue and recovery workers.