Do doctors in managed-care plans give less charity care? Researchers chose 60 communities at random and then chose doctors at random in each community. In all, they interviewed 10,881 doctors. Overall, 77.3 percent of the doctors said they had given some care free or at reduced rates because of the patient's financial need in the month before the interview. Doctors who received at least 85 percent of their practice income from managed-care plans were significantly less likely than other doctors to provide charity care.
Some doctors who did not give any charity care may say that they did. If so, the study suffers from:

Question

Quizplus · Accepted Answer

If some doctors who did not give any charity care falsely reported that they did, the sample result would be systematically overestimating the true percent of doctors who give charity care. This is a form of response bias, where the respondents may provide inaccurate or false information, leading to biased results. Therefore, D is the correct choice. A is not correct because there is no mention of a large margin of error in the study. B is not relevant here, as the random sampling design seems appropriate. C is not relevant as the study is not expected to systematically underestimate the true percent of doctors who give charity care.

Do Doctors in Managed-Care Plans Give Less Charity Care? Researchers