Prehospital Emergency Service Use for Substance-Related Issues before and during COVID-19.

This study shows that the elderly group is at higher risk for substance-related medical problems. Suicide is an important risk among individuals with substance use. The increase in demand for ambulance transfer services can place a significant burden on prehospital emergency care. There is a need for measures to provide emergency and transport services, especially for the elderly and suicide attempts during any future case of emergency.