The psychiatric examination was carried out by a psychiatrist that was aware of drug use and abuse. Each patient was placed into two different groups. .
The first was patients that had been diagnosed with at least one psychological issue and the other were free from any issue. Each one of the 150 patients was compared with other patients that showed similar psychological issues and their age and schooling level was fairly similar but had no history of drug intake. All patients were given test in regards to memory, behavioral memory and planning abilities. To determine the statistical differences between the patients the Chi-Square test, the Student-T test and the Non-Parametric Mann-Whitney tests were used. The SAS Statistical Analysis Package was used to conduct statistical analysis (American Psychiatric Association, 1997). "The study found that the main psychological problems from the use of ecstasy were as follow, depression was the highest at 32%, psychotic disorders at 28%, cognitive impairment at 27%, bulimia at 24%, impulse control disorders at 14%, panic attacks at 12% and lastly any of the above 53% of the 150 patients had more than one of the above issues" (American Psychiatric Association, 1997). Also during the study it was noted that most of the patients that took ecstasy was usually at a dance club on the weekends to have fun but to also feel the "positive" or "pleasurable" effects from the tablet. Lastly it was also seen that patients that mixed ecstasy with alcohol use were more likely to have one or more psychological problems compared to a person that just took the tablet (Schifano et al, 1998).
In the second study, a total of 329 individuals that use ecstasy were interviewed in three of the largest cities in Australia, Melbourne, Sydney and Brisbane (Topp, Hando, Dillon, Roche and Solowij, 1999). The way these individuals were found was by the means of advertisement in newspapers, radio ads and flyers.