Question

Types of errors in pharmacoepidemiology

Answer 1

• Errors can be differential (systematic) or

non-differential (random)

• Random error: use of invalid outcome

measure that equally misclassifies cases

and controls

•

• Differential error: use of an invalid

measures that misclassifies cases in

one direction and misclassifies controls in

another

• Term 'bias' should be reserved for

differential or systematic error