hazard ratio


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hazard ratio

(haz′ărd),

HR

1. In biostatistics, the calculated likelihood that a particular intervention will make a study outcome more or less likely to occur. A hazard ratio of 1.0 indicates that the variable has no impact on the outcome. A hazard ratio of less than 1.0 indicates that the variable decreases the likelihood of the outcome. A ratio exceeding 1.0 indicates that the variable increases the likelihood of the outcome. A ratio of 2.0 suggests that the variable doubles the likelihood of the outcome. A ratio of 0.5 suggests that it halves the risk of the outcome.
2. The likelihood that a group of people who are exposed to an event, toxin, or treatment will experience poor health, relative to a group of people who are not similarly exposed.
References in periodicals archive ?
Potters and colleagues found that the 7-year bRFS hazard ratio for radiotherapy (all treated with [greater than or equal to]70 Gy) compared to surgery was 1.
Table 1: Comparison of Hazard Ratio of Mortality for Uninsured Group Relative to Insured Group Polsky et al.
We would divide the hazard ratio for the Middle Atlantic covariate by the hazard ratio of the East South Central census division to get 0.
These rates translate to a circumcision effectiveness of 68% in the survival analysis, the adjusted hazard ratio of HTV acquisition during the posttrial period was 0.
Tobacco use (100 or more cigarettes lifetime) and alcohol expectancies for social/physical pleasure significantly predicted increased rates of transition from first drink to heavy drinking with hazard ratios of 1.
As with other research, the study found that smoking during pregnancy was associated with a higher risk of stillbirth, although smokers who used nicotine replacement therapy had a risk of stillbirth similar to the nonsmoking, non--NRT-using women (adjusted hazard ratio 0.
After adjusting for age, body mass index, baseline blood pressure and other potential confounders, the hazard ratio for incident hypertension was 1.
Patterns were similar for full and for any breast-feeding In Cox regression analyses, the risk of not being exclusively breast-fed was reduced among infants born in hospitals with low compliance (adjusted hazard ratio, 0.
10] TCDD was entered as the exposure variable, the hazard ratio associated with a 10-fold increase in TCDD was 1.
In a Cox proportional hazard analysis comparing prostate cancer-specific survival in the control group with that in the screened group, the hazard ratio for death from prostate cancer was 1.
In the 244 trial of patients with advanced solid tumors (excluding breast and prostate) or multiple myeloma, denosumab-treated patients also experienced a delay in clinically significant worsening of pain compared with patients on Zometa (median 169 days: denosumab, 143 days: Zometa; hazard ratio 0.
The adjusted hazard ratio associated with vitamin E (with or without a cholinesterase inhibitor) was 0.