***TASK*** the task is to summarize an input biomedical literature in six sentences 
    ***INPUT*** the input is a biomedical literature 
    ***OUTPUT*** the output is the summary of an input biomedical literature in six sentences 
    ***DOCUMENTATION*** 
    ***EXAMPLES*** 
    Input: This study assessed the effects of 3 theoretically grounded , school-based HIV prevention interventions on inner-city minority high school students ' levels of HIV prevention information , motivation , behavioral skills , and behavior . It involved a quasi-experimental controlled trial comparing classroom-based , peer-based , and combined classroom- and peer-based HIV prevention interventions with a st and ard-of-care control condition in 4 urban high schools ( N = 1,532 , primarily 9th- grade students ) . At 12 months postintervention , the classroom-based intervention result ed in sustained changes in HIV prevention behavior . This article discusses why both of the interventions involving peers were less effective than the classroom-based intervention at the 12-month follow-up and , more generally , suggests a set of possible limiting conditions for the efficacy of peer-based interventions OBJECTIVE This study compared the recorded prevalence of HIV among veterans with and without serious mental illness . METHODS This cross-sectional study examined data from a national sample of veterans who received a diagnosis of serious mental illness ( schizophrenia , bipolar disorder , and other , nonorganic psychoses ) in fiscal year 2002 ( FY2002 ) ( N=191,625 ) and from a national r and om sample of veterans in FY2002 who did not receive serious mental illness diagnoses ( N=67,965 ) .  Logistic regression was used to evaluate the recorded prevalence and predictors of HIV . RESULTS HIV diagnoses were recorded for 1.0 % of patients with serious mental illness and .5 % of patients without serious mental illness . Multivariate analyses indicated that individuals with bipolar disorder were no more likely than those without serious mental illness to have a recorded HIV diagnosis ( OR=1.08 , CI=.93 - 1.24 ) , whereas those with other psychoses were more likely to have one ( OR=1.18 , CI=1.01 - 1.38 ) . An interaction was observed between schizophrenia and substance use disorder . Compared with patients who had neither schizophrenia nor a substance use disorder , those with schizophrenia without a substance use disorder were less likely to have a recorded HIV diagnosis ( OR=.49 , CI=.42-.58 ) , whereas those with a substance use disorder were more likely to have a recorded HIV diagnosis ( OR=1.22 , CI=1.04 - 1.43 ) . CONCLUSIONS Despite the elevated crude recorded prevalence of HIV , multivariate analyses suggested that HIV-related risk factors underlie the associations between HIV and the serious mental illness diagnoses . For patients with schizophrenia , this study is the first to demonstrate reduced HIV risk in the absence of a substance use disorder 
    Output:
    
Several risk factors were identified and discussed , although sampling limitations restrict the generalization of study findings .