Rates of under-reported drug use are considerable among individuals with schizophrenia when compared to laboratory assays, and the exclusive reliance on self-rated assessments should be used with caution. Patients who under-report their drug use are more likely to manifest neurocognitive deficits, which could be improved by interventions attempting to optimize treatment.
Few studies have examined the effects of race on community outcomes in cooccurring schizophrenia and substance use disorders. Such effects were examined among 1,370 Black and White persons classified as having schizophrenia; schizophrenia and alcohol use disorders; schizophrenia and drug use disorders; or schizophrenia, alcohol, and drug use disorders. Results revealed that Black individuals with schizophrenia, alcohol, and drug use disorders demonstrated the greatest psychosocial deficits compared to all other groups observed. These findings underscore the need for social
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