Reasons for association 3

Question 1

What is bias

Answer 1

Systematic deviation of results or inferences from the truth

Question 2

What is information bias

Answer 2

Information bias is a systematic error in a study that arises because the information collected about or from study subjects is erroneous

Question 3

What is ascertainment bias

Answer 3

Ascertainment bias can occur in a cohort study when outcome ascertainment in the exposed group is different to the unexposed group

Question 4

What Is recall bias

Answer 4

Recall bias may occur when the information provided on exposure differs between the cases and controls. For example an individual with the outcome under investigation (case) may report their exposure experience differently than an individual without the outcome (control) under investigation.