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 Cross product ratio is used in:- and explain in detail?
Framework of a case control study (The 2 x 2 contigency table) Suspected or risk factors Cases (Disease present) Control (Disease absent) Present Absent ac bd a+c b+d Cross product ratio is another name for Odds ratio. It used to calculate strength of association between risk factor and outcome in case of case control studies. Odds Ratio (OR) = (a x d)/(b x c) Since it involves cross multiplying the values in the 2x2 Contingency table, it is called cross product ratio In coho study , Relative Risk (or Risk Ratio) is determined Cross sectional studies deal with determining prevalence of disease Ecological study is used to determine correlation