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Researchers hypothesized that there is a correlation between khat chewing and a risk for psychosis. Researchers also predicted that there would be a higher prevalence of a psychotic diagnosis among men. For this case-controlled study researchers examined individuals presenting psychosis who used khat matched with a group of controls who also consumed khat. Individuals who presented mental health problems to the point of disability were matched with controls by gender, age, and level of education. This study was conducted in Hargeisa, Somalia where a sample of 612 households with 4,854 persons was randomly selected as representative of the city. The means of random selection was purely efficient as well as complex. Heads of households were interviewed by trained staff posing the question whether or not there were members of the household with mental problems so severe they were unable to contribute to the household in the past four weeks. Researchers found that this was true for 169......

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Approximate Word Count: 527
Approximate Pages: 3 (250 words per double-spaced page)

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