Answer Happy

Question 17 (1 point) A case-control study can be distinguished from a retrospective cohort study by the following: a) Participants are first categorized based on outcome status in a case-control study but not in a retrospective cohort study. b) Case-control studies are conducted to investigate rare diseases, retrospective cohort studies are used for chronic diseases. Case-control studies allow for a temporal relationship between exposure and outcome, but retrospective cohort studies do not. d) Participants are asked about their exposure status in a case-control study, but not in a retrospective cohort study. Question 18 (1 point) Depending on the treatment being tested, in a randomised-controlled trial potential possible options for the control group include: a) Placebo or the current best treatment. b) Placebo c) No treatment, placebo, current best treatment. d) Should always be the current best available treatment.