Question

Which statements are true, and which are false? Explain. Tor F Recall bias always results in an underestimate of the magnitude of association. Tor F Prospective cohort studies are prone to recall bias. Tor F Interviewer bias can produce either an over-estimate or under-estimate of the magnitude of association. Tor F Significant loss to follow up can cause an over-estimate or under-estimate of the magnitude of association in a prospective cohort study. Tor F Case-control studies are vulnerable to bias because both the exposure and disease have already occurred, and knowledge of disease status may influence reporting or recording of exposure status

Answer 1

of the O Recall bias always results in an understimate magnitude of association FALSE always Prospective cohort Studies are prone to recall bias. IT RUE i Not alw Understimate. 2 3 TRUE ; Interviewer bias Can produce either an over-estimate or underestimate the magnitude of association af Ч TRUE Incomplete follow up biases the result. ITRUE ; In Case Control Studies, It generally happens. 5 CSScanned with CamScanner