# Hazard ratio > 생존 분석에서 쓰는 지표 중 하나. <생존 분석>에서 쓰는 지표 중 하나. - the ratio of (chance of an event occurring in the treatment arm) / (chance of an event occurring in the control arm) - the ratio of (risk of outcome in one group) / (risk of outcome in another group), occurring at a given interval of time