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  2. Hazard ratio - Wikipedia

    en.wikipedia.org/wiki/Hazard_ratio

    The hazard ratio is the effect on this hazard rate of a difference, such as group membership (for example, treatment or control, male or female), as estimated by regression models that treat the logarithm of the HR as a function of a baseline hazard () and a linear combination of explanatory variables:

  3. Proportional hazards model - Wikipedia

    en.wikipedia.org/wiki/Proportional_hazards_model

    The hazard ratio is the quantity ⁡ (), which is ⁡ = in the above example. From the last calculation above, an interpretation of this is as the ratio of hazards between two "subjects" that have their variables differ by one unit: if = +, then ⁡ (() = ⁡ (()).

  4. ISO/IEC 31010 - Wikipedia

    en.wikipedia.org/wiki/ISO/IEC_31010

    Risk assessment is part of the core elements of risk management defined in ISO 31000, which are: . communication and consultation; establishing the context; risk assessment (risk identification, risk analysis, risk evaluation)

  5. Failure rate - Wikipedia

    en.wikipedia.org/wiki/Failure_rate

    A concept closely-related but different [2] to instantaneous failure rate () is the hazard rate (or hazard function), (). In the many-system case, this is defined as the proportional failure rate of the systems still functioning at time t {\displaystyle t} (as opposed to f ( t ) {\displaystyle f(t)} , which is the expressed as a proportion of ...

  6. Talk:Hazard ratio - Wikipedia

    en.wikipedia.org/wiki/Talk:Hazard_ratio

    I think this confusion between hazard ratio and risk ratio is already apparent in the current version of this page: a treatment increasing the number of one-year survivors in a population from one in 10,000 to one in 1,000 has a hazard ratio of 10. This is not true. The relative risk is 10. With the help a statistical software, I found out that ...

  7. Hazard quotient - Wikipedia

    en.wikipedia.org/wiki/Hazard_quotient

    A hazard quotient is the ratio of the potential exposure to a substance and the level at which no adverse effects are expected. If the Hazard Quotient is calculated to be less than 1, then no adverse health effects are expected as a result of exposure. If the Hazard Quotient is greater than 1, then adverse health effects are possible.

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