This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
Most common blinding seen in epidemiology is:- 
Select and explain. 
A. No blinding, B. Single blinding, C. Double blinding, D. Triple blinding
C: Double blinding
Answer: C: Double blinding 
Explanation: Most common blinding seen in epidemiology is Double blinding. Best type of blinding - Triple blinding. Major method for Removal of Bias - Blinding. Single Blinding - Subjects are not aware of Treatment they are getting. Double Blinding - Both Subject and investigator are not aware of treatment being given. M/C Seen in Epidemiology. Triple Blinding - Subject, Investigator and Analyzer are not aware of Treatment being given. Best blinding.