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Risk is the lack of certainty about the outcome of making a particular choice. Statistically, the level of downside risk can be calculated as the product of the probability that harm occurs (e.g., that an accident happens) multiplied by the severity of that harm (i.e., the average amount of harm or more conservatively the maximum credible amount of harm).
English: A rational scale to assess the harm of drugs. Data source is the March 24, 2007 article: Nutt, David, Leslie A King, William Saulsbury, Colin Blakemore. "Development of a rational scale to assess the harm of drugs of potential misuse" The Lancet 2007; 369:1047-1053.
Intuitively, the lower the number needed to harm, the worse the risk factor, with 1 meaning that every exposed person is harmed. NNH is similar to number needed to treat (NNT), where NNT usually refers to a positive therapeutic result and NNH to a detrimental effect or risk factor. Marginal metrics: NNT for an additional beneficial outcome (NNTB)
Software criticality levels range from A to E, corresponding to the severity of Catastrophic to No Safety Effect. Higher levels of rigor are required for level A and B software and corresponding functional tasks and work products is the system safety domain are used as objective evidence of meeting safety criteria and requirements. [citation ...
In an ideal world no person should ever be arrested for possession of these drugs but society should encourage (with or without a stick) treatment for those drugs at the far ends of the scale and they should recognize the damage caused by presently legal drugs before ranting and lying about the affects of other drugs which are shown to cause ...
Rapid technological change, increasing scale of industrial complexes, increased system integration, market competition, and other factors have been shown to increase societal risk in the past few decades. [1] As such, risk assessments become increasingly critical in mitigating accidents, improving safety, and improving outcomes.
"Development of a rational scale to assess the harm of drugs of potential misuse" The Lancet 2007; 369:1047-1053. PMID:17382831. For more information, see image. It contains not only the physical harm and dependence data like the aforementioned image, but also the mean social harm of each drug.
Research suggests that these events are often inadequately reported in publicly available reports. [4] Because of the lack of these data and uncertainty about methods for synthesising them, individuals conducting systematic reviews and meta-analyses of therapeutic interventions often unknowingly overemphasise health benefit. [ 5 ]