This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: DNB 2018, Subject name: Social & Preventive Medicine
[{'content': 'Bias in Which variation occur due to different disease treated in different hospitals:- \nSelect and explain. \nA. Neyman bias, B. Berksonian bias, C. Attention bias, D. Recall bias', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Berkesonian bias is a special type of bias, named after Dr. Joseph Berkeson, who recognized this problem due to different rates of admission to hospitals for people with different diseases Neyman bias: due to missing of fatal cases, mild/silent cases and cases of sho duration from the study. Attention bias or Hawthorne effect: study subjects may systematically alter their behavior when they know they are being observed. Recall bias: cases are more likely to remember exposure more correctly than controls.', 'role': 'assistant'}]