Epidemiology & Public Health
The Epidemiology is the investigation of the circulation and determinants of sicknesses in populaces. It is the key quantitative order that supports public health, which is regularly characterized as the composed endeavors of society to prevent sickness and to promote wellbeing. Epidemiology consists of research methods and specific strategies for counting and calculating the occurrence and risk of disease. Therefore, epidemiological studies of drug use employ these methods and statistical measures to study the occurrence and distribution of drug use and its associated problems.