This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Analytical Epidemiology, Subject name: Social & Preventive Medicine
[{'content': 'Berkesonian bias is a type of ? \nSelect and explain. \nA. Selection bias, B. Interviever bias, C. Information bias, D. Recell bias', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Selection bias Berksonian bias is a type of selection bias.Biaso It is any systemic error in the analysis of study that results in a mistaken estimate of an exposure's effect on the risk of disease.o Mainly biases are of following types.1. Selection bias# Surveillance/detection bias# Referrel bias or volunteer bias# Berksonian bias# Neyman survival bias# Response bias 2. Information (Misclassification) bias# Reporting bias# Interviewer bias# Recall bias# Hawthorne bias (attention bias)3. Confounding bias# Confounding is some times is referred to as a third major class of bias.", 'role': 'assistant'}]