Need randomized experiments Randomized experiments: Definition:a study that assigns treatments randomly to different groups of study participants Includes: A control group(no treatment) ■Placebo group Helps generate experimental groups that are statistically similar to each other Bhattacharya,Hyde and Tu-HealthEconomicsBhattacharya, Hyde and Tu – Health Economics Need randomized experiments  Randomized experiments:  Definition: a study that assigns treatments randomly to different groups of study participants  Includes: ◼A control group (no treatment) ◼Placebo group  Helps generate experimental groups that are statistically similar to each other