Berkesonian bias refers to -
This special example of berkesonian bias is termed after Dr. Joseph Berkesonian who recognized this problem. Ref: 25th edition, Park's Textbook of Preventive and Social Medicine, Page no. 81, 82
Bias arsing from different rates of admission to the hospital
Bias arising from presence of confounding factors
Bias arising from the case not being representative of general population
Bias arising from improper selection of cases
Epidemiology