Cox proportional hazards model

The Cox Proportional Hazards Model is a statistical method used in survival analysis to examine the effect of various factors on the time until an event occurs, such as death or failure. It estimates how likely an event is to happen, considering different characteristics (like age, treatment, or lifestyle). The model assumes that the impact of these factors on the event's timing is constant over time. It helps researchers understand risk and compare groups, providing insights into what influences survival chances without needing to assume a specific form for the timing of the event.