The phrase "severity rating" refers to a measure or assessment of how serious or severe something is. It helps to evaluate the impact or level of harm caused by a situation, issue, or event. Full definition
The analyses used the continuous severity ratings of each childhood experience. (journals.plos.org)
Similarly, the study found that severity ratings for tornadoes are usually based on the damage they cause to structures and may not have been consistently applied over the past fifty years. (ucsusa.org)
CRIME — 5 points — Violent crime rates (2 points), total crime rates (2 points) per 100,000 people and crime severity rates (1 point) for 2008 from the Canadian Centre for Justice Statistics. (moneysense.ca)