Extremadura PAU General Sciences Practice Questions - Extremadura PAU General Sciences Examination - UEx (Ciencias Generales 2o Bachillerato 2026) Exam

Why is a placebo group included in clinical trials testing new pharmacological treatments?

To increase the sample size without incurring chemical reagent costs To ensure all trial participants receive active therapeutic compounds To eliminate the need for statistical significance testing To isolate the physiological effect of the drug from psychological factors and baseline changes

Correct Answer:

To isolate the physiological effect of the drug from psychological factors and baseline changes

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