The Center for AIDS Research at the University of North Carolina at…

Question Answered step-by-step The Center for AIDS Research at the University of North Carolina at… The Center for AIDS Research at the University of North Carolina at Chapel Hill (UNC) initiated a prospective cohort study of HIV-infected patients in 1999.  This clinic based cohort study enrolled 2,511 African American and Caucasian individuals and monitored CD4 cell count and HIV RNA levels at the first clinic visit (enrollment visit) and subsequent follow-up visits conducted every 6 months through 2012.  During the study, 404 patients died, 1,390 were lost to follow-up and 717 reached the end of the study period alive.  Researchers were interested if African American race was causally associated with time of death.Which of the following biases may occur in this study? (select one best answer)    A) Healthy Worker bias due to occupational exposures B) Selection bias due to loss to follow up C) Recall bias D) Hawthorne Effect due to the exposure E) None of the above  Science Health Science PBHL 3001 Share QuestionEmailCopy link Comments (0)