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.
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.
S
- Scaled SchoenfeldGrambsch-Therneau Test, PH Assumption Test
- A diagnostic technique testing the proportional hazards assumption by scaling Schoenfeld residuals by their variance to improve test power.
- Schoenfeld ResidualSchoenfeld Test, Cox Residual
- A residual specific to the Cox model, calculated at each event time, used to test whether the proportional hazards assumption holds.