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 are characteristics of case control study except and explain in detail?
Disadvantages of case control study Problems of bias relies on memory or past records Selection of an appropriate control group may be difficult Cannot measure incidence and can only estimate relative risk Do not distinguish between cause and associated factors Another major concern representatives of cases and control (refer pgno:74 park 23 rd edition)