You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Similarity between Cross sectional study design and Ecological study design:- and explain in detail?
Cross Sectional Study Ecological Study Both studies are done at a point of time - Done based on primary Data i.e. collected by Investigation himself from House to House. - It provides "Prevalence", so a/K/a Prevalence Study - a/K/a "SNAPSHOT Study". - Done based on Secondary Data i.e. Collected data from records of hospital Data is not collected by Investigator himself. - Used in Nutritional Surveys - Cannot calculate strength of association / prevalence - Unit of Study is population and results are extrapolated projected not on Individuals but on total population. This drawback is known as "Ecological Fallacy".