Question 2Which of the following types of events can be measured by a risk and/or a rate? 1 pointNewly developed cases of diseaseRecurrence of a diseaseDevelopment of a drug or treatment side effectAll of the above

Which of the following would NOT lead to an increase in the risk facing a population?1 pointThe arrival of a costly drug that offered a new opportunity to treat a previously untreatable conditionThe creation of new surgical techniques that replace earlier less expensive techniquesBuilding more hospitals, and an accompanying increase in the probability that a person will be hospitalizedExpanding employment opportunities that lead to an increase in per-capita income

In order to calculate a risk, which of the following steps must be taken? (You must choose all that apply to receive credit for this question; no partial credit will be awarded.)1 pointdetermine the number of males and females in the studydefine a case definition for the health outcome under studydetermine the number of new cases of the outcome under studydetermine how many people in the study were exposed or unexposed to the exposure under studydefine the at-risk study population

A study reports a mortality rate of 6% in the experimental group and 10% in the control group. Which of the following statements is correct?Question 4Select one:a.None of options are correctb.The risk difference is 4%c.The RR is approximately 1.67d.The number needed to treat is 10e.The incidence of death is 6%

A study reports a mortality rate of 25% in patients randomised to receive drug A compared to 50% of patients randomised to receive drug B. Which of the following statements is correct?Question 8Select one:a.None of the options are correctb.The risk of mortality is reduced by 25% in patients receiving drug A compared to drug Bc.Patients randomised to receive drug A are two times more likely to die compared to those receiving drug Bd.The relative risk of mortality in patients receiving drug B is 50%e.The relative risk of mortality in patients receiving drug A compared to drug B is 0.50

If you are studying the rate of leukemia, which of the following events would affect a participant’s person-time? (You must choose all that apply to receive credit for this question; no partial credit will be awarded.)1 pointparticipant goes out of town for a weekendloss to follow-upbeing sick with influenzaparticipant decides to no longer participate in the studydeath