Epi Concepts

Question 1

Define response bias

Answer 1

When participants purposely give desirable responses to questions that are perceived to be sensitive

Question 2

Define nonresponse bias

Answer 2

When respondents differ from non respondents in such a way that threaten the generalizability of the study results

Question 3

Define lead time bias

Answer 3

Lead time bias happens when survival time appears longer because diagnosis was done earlier, irrespective of whether the patient lived longer.