1.0Glossaryhttps://www.healthbenefitstimes.com/glossaryGlossaryhttps://www.healthbenefitstimes.com/glossary/author/adminglossary/Number needed to harm - Definition of Number needed to harmrich600338<blockquote class="wp-embedded-content" data-secret="kBDwm8dz8f"><a href="https://www.healthbenefitstimes.com/glossary/number-needed-to-harm/">Number needed to harm</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.healthbenefitstimes.com/glossary/number-needed-to-harm/embed/#?secret=kBDwm8dz8f" width="600" height="338" title="“Number needed to harm” — Glossary" data-secret="kBDwm8dz8f" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script>
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The number of patients who would need to be exposed to a noxious agent or medical intervention in order that one might be harmed. This concept is important in the assessment of the relative hazard of medical interventions, the relative toxicities of poisons, or the relative value of certain experimental interventions. Generally, the smaller the value, the more dangerous the therapy or noxious agent.