Screening & Diagnostic Test Evaluation — Topic Test
20 questions · exam mode (answers revealed at the end). 18 min suggested.
A state programme officer is planning to evaluate whether a newly introduced screening programme for oral cancer genuinely prolongs survival or merely appears to do so because cases are detected earlier without changing the date of death. Which bias must be specifically controlled for in this evaluation?
ABerksonian bias
BHawthorne effect
CLead-time bias
DRecall bias