"Alarming statistics" refers to numbers or data that are concerning or worrying. It suggests that the information being presented is cause for alarm or serious concern. Full definition
With such alarming statistics, drivers need to be more aware of how their driving behavior can affect themselves and others. (floridaonlinetrafficschool.com)
These very alarming statistics are destined to become worse in the decades to come if something is not done about it. (sciencemag.org)
The Centers for Disease Control has a number of alarming statistics about teen drivers who were unprepared for the responsibility of owning a driver's license. (texas-defensivedriving-courses.com)