Which type of bias makes a screening program appear to have a beneficial effect on survival because people who are destined to have a favorable course are selectively identified?
A) Volunteer bias
B) Lead-time bias
C) Information bias
D) Length-bias sampling

Question

Quizplus · Accepted Answer

Length-bias sampling occurs when screening programs are more likely to detect slower-progressing, less aggressive cases of a disease, which naturally have a better prognosis, making the program appear more beneficial than it actually is.

Which Type of Bias Makes a Screening Program Appear to Have