Abbreviations.

CBSA	Core Based Statistical Area
CDC	Center for Disease Control and Prevention
ED	Emergency Department
EMS	Emergency Medical Services
ICD-10	International Classification of Diseases, 10th Revision
NKY	Northern Kentucky
PCR	Principal Component Regression Analysis
QRT	Quick Response Team
OUD	Opioid Use Disorder
SAMHSA	Substance Abuse and Mental Health Services Administration
SE	Standard Error
TEDS-A	Treatment Episode Data Set: Admissions
US	United States