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 All of the following statements regarding case control study are true, except and explain in detail?
Using case control study only odds ratio can be calculated. Incidence rates, relative risk and attributable risk can be calculated using coho study. Case control study is inexpensive, easy to carry out, used to investigate rare diseases, used to identify risk factors, allows study of different etiological factors and is associated with minimal ethical problems. Reference: Parks Textbook of Preventive And Social Medicine 20th edition, page 70.