A certain disease is classified into 444 stages that distinguish how developed the disease is. Researchers studying a new potential treatment recruited over 100100100 patients with varying stages of the disease for their study. Half of the patients with stage 111 were randomly assigned to receive the new treatment, and other half of stage 111 patients received a placebo. A similar strategy was used for patients in each of the other stages. What type of experiment design is this? Choose 1 Choose 1