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The study is examining the relationship between drugs and property and violent crime ; monitoring patterns of drug use across time ; and helping to assess the need for drug treatment among the offender population . This study is examining the relationship between working conditions ( e.g ., culture and environment , staff interaction , and staffing ) and organizational performance measures . This study is examining the association between hospital activity / workload and rates of adverse drug events to assess whether the workload should be limited or the processes during times of high workload pressure should be reengineered to improve patient safety .