Most effective dosage and method of administration

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In an experiment on a new drug to determine the most effective dosage and method of administration, subjects were randomly assigned to either 5, 10, 15, or 20 mg of the active drug. In addition, the method of delivery of the drug (patch,pill, or nasal mist) was considered. In this experiment, there were how many treatments?

Reference no: EM1395863

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