In 1998, The Lancet published a study reporting a claim that the three-in-one measles, mumps, and rubella (MMR) vaccine caused gastrointestinal problems and autism. All the following are examples of unprofessional conduct and intentional fraud discovered in the study EXCEPT ________.
A) weak methodological design
B) randomized recruitment of study participants
C) involvement of lawyers who intended to sue vaccine companies
D) parents of study participants who blamed the MMR vaccine for their children's condition before the study

Question

Quizplus · Accepted Answer

The study's recruitment of participants was not randomized; it was biased, involving children whose parents already believed the MMR vaccine had harmed them. Randomized recruitment would have been a more professional and scientifically valid approach, avoiding selection bias.

In 1998, the Lancet Published a Study Reporting a Claim