AfroCaribbean patients as compared to their white British counterparts . This small yet significant factor may have been contributory in creating errors regarding the rates and prevalence of schizophrenia in both groups . For example , some studies have admitted various methodological limitations . Many studies failed to correctly estimate the size of the population at risk . Similarly , the studies that were carried out before the 1991 census were based on estimates , which limit the credibility of the findings and the reports . Many studies...











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