hazard ratio

== English == === Noun === hazard ratio (plural hazard ratios) (statistics, medicine) A measure of the chance of an event in one group compared to that of another at a particular time or over a subset of a study's time; the ratio between two groups' hazard rates. Alternative form: HR (initialism) Hypernyms: ratio; metric ==== Usage notes ==== A hazard ratio significantly different from 1 means that the event being studied is much more likely in one group than in the other. A hazard ratio close to 1 means that the event's likelihood is not significantly different between the two groups compared. ==== Related terms ==== ==== Translations ====