Hazard ratio
What it is
A hazard ratio compares event rates among participants still at risk during follow-up.
What it does
It is commonly reported in time-to-event analyses.
Research context and ingredient forms
It is not automatically the same as a ratio of cumulative probabilities over the whole study.
Using this information
Read the event definition, reference group, follow-up, confidence interval, and model assumptions. A ratio below 1 is not always beneficial if the event is desirable.
Scientific Research & References
- NCI Dictionary of Cancer Terms: hazard ratio
National Cancer Institute
Limitations: Terminology support only; not evidence of benefit for a particular intervention.
Source assessment recorded.
Related dictionary entries
Products containing it
No label-specific product relationship has been reviewed for this entry.