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

If you are studying the rate of breast cancer, 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 decides to no longer participate in the studydeathpatient undergoes a double mastectomy diagnosis with uterine cancerloss to follow-up

If you are studying the rate of relapse for lung cancer after treatment, 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 pointtime period(s) when the patient is considered to have active lung cancerparticipant decides to no longer participate in the studytime of initial diagnosis with lung cancertime period(s) the patient is in remission from lung cancer

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 are advantages of using a rate measure? (You must choose all that apply to receive credit for this question; no partial credit will be awarded.)1 pointcan accommodate repeated events that affect the same study participantgood for health outcomes or diseases that are of long durationsuitable for a dynamic populationflexibilitygood for health outcomes or diseases with long latent periods

Questions 1-3 relate to the following information: Consider a cohort of 15,000 people followed during a one-year time period (January 1, 2002 – January 1, 2003). In this cohort, there are 9,000 women and 6,000 men. The table shows the number of women and men with existing disease at the beginning of the time period (existing cases), the number of incident cases that are diagnosed (new cases) and the number that remain free of disease during this time period (no disease). Answer the following questions: Status During StudyWomenMenNo Disease for entire study3,0003,000Existing Cases at Baseline4,0002,000New Cases2,0001,000TOTAL9,0006,000 Question 3: What proportion of men have the disease at any time during the period of study (this is the prevalence among men)? What proportion of men without disease at baseline develop the disease during the period of study (this is the incidence among men)?Group of answer choices33.3% and 50%50 % and 25 %33% and 25%25% and 25%