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 In a statistical study for calculating the effect of drug on patient's sugar level the test showed significant difference when in reality there was no difference and explain in detail?
Ref:Park's Textbook of Preventive and Social Medicine 25th Ed