!.Distinguish between experimental and observational studies. 2. Describe the ke
!.Distinguish between experimental and observational studies. 2. Describe the key characteristics (subject selection, data collection, and analysis) of experimental, cohort, case-control, cross sectional, and ecologic studies. 3. Read the abstract of the article at the following link: https://ajp.psychiatryonline.org/doi/abs/10.1176/ajp.153.10.1340 Links to an external site. based on the abstract, what type of epidemiological study was conducted? Explain.…