"Prevalence of marijuana use disorders in the United States: 1991-1992 and 2001-2002."
National Institutes of Health website could be considered a credible source highlighting the health and medical issue. The article at this webpage provides a brief insight into the marijuana use by the general population, how widespread it is and how prevalent are the marijuana use disorders in the entire population. The aim of this article is to determine the changes in the marijuana use and abuse between 1991-1992 and 2001-2002, which is achieved through the comparison of two surveys, carried a decade apart. The results of the survey showed that the use of marijuana remained stable at about 4% among the adult population. The prevalence of disorders due to marijuana abuse appears to have been increased to a great degree from 1.2% in 1991-1992 to 1.5% in 2001-2002. These disorders were more prevalent in young population of black men and women. Overall the core purpose of the webpage is to highlight statistically the use and abuse of marijuana so as to clarify the severity of the situation and use it in my study to focus the attention of people especially youth towards the issue and develop preventive measures.
The sources of these two surveys, as quoted by the webpage, are National Longitudinal Alcohol Epidemiologic Survey and National Epidemiologic Survey on Alcohol and Related Conditions. This according to me satisfies all the required standards and therefore can be considered credible. Therefore by quoting these surveys I will be able to establish a firm foundation for the issue under study by quoting them as concrete supporting evidence.