After 2 days of drug-free observation, 20 newly admitted psychotic
patients received 20-35 mg of haloperidol intravenously and 20 patients
received 30-40 mg of diazepam intravenously. Posttreatment ratings at 4 and
24 hours with the Brief Psychiatric Rating Scale and the Clinical Global
Impressions revealed significant improvement in both groups but no
significant differences between the two treatments.