Dictionary
The Dictionary provides concise definitions of health economics terms, arranged alphabetically for quick reference. Use it to understand unfamiliar terminology or confirm the meaning of a specific term.
H
- Hazard RatioHR, Relative Hazard
- A hazard ratio compares the instantaneous rate of a specified event between two groups at the same time among individuals still at risk, with a constant value requiring a proportional-hazards interpretation.
P
- Proportional Hazards AssumptionPH Assumption, Constant Hazard Ratio Assumption
- The Cox model assumption that the hazard ratio between two groups stays constant over follow-up, even as the absolute hazard rate changes.
R
- Restricted Mean Survival TimeRMST, Mean Survival to Horizon
- A survival summary measure calculated as the area under the survival curve up to a specified time point, an alternative to the hazard ratio.