Regis NU-713 Midterm Exam Practice Questions and Answers

Regis NU-713 Midterm Exam Practice Questions and Answers A colon cancer screening study is being conducted in Burkeshire, England. Individuals 50 to 75 years old will be screened with the Hemoccult test. In this test, a stool sample is tested for the presence of blood. The Hemoccult test has a sensitivity of 70% and a specificity of 75%. If Burkeshire has a prevalence of 12/1,000 for colon cancer, what is the computed positive predictive value of the Hemoccult test? - Ans:-3.3% Primary prevention - Ans:-Immunization, reducing exposure to a risk factor Secondary prevention - Ans:-Screening for breast cancer Tertiary prevention - Ans:-Rehabilitation after a surgical procedure A physical examination was used to screen for breast cancer in 2,500 women with biopsy-proven adenocarcinoma of the breast and in 5,000 age- and race-matched control women. Results of the physical examination were positive, meaning that a mass was palpated in 1,800 cases and in 800 control women, all of whom showed no evidence of cancer at biopsy. The sensitivity of the physical examination was ________ percent. - Ans:-72% ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 2/12 A program manager from an international health funding agency wants to identify regions that would benefit from an intervention to reduce premature disability. The program manager asks you to develop a proposal using an index that would assist in making this decision. Which of the following would best serve this purpose to provide the needed information? - Ans:-Disability-adjusted life-years A research study reported a weighted Kappa statistic of Kappa = 0.86 between raters (Kappa = 0.86). The reported Kappa statistic indicates ________. - Ans:- Herd Immunity - Ans:-The resistance of a group of people to an attack by a disease to which a large proportion of members of the group are immune Incubation period - Ans:-The interval from receipt of infection to the time of onset of clinical illness Preclinical disease - Ans:-Disease that is not yet clinically apparent but will progress to clinical disease Persistent (chronic) disease - Ans:-Disease that persists for years and sometimes for one's lifetime A screening test is used in the same way in two similar populations, but the proportion of false-positive results among those who test positive in population A is lower than that among those who test positive in population B. The most likely explanation for this finding is ________. - Ans:-the prevalence of disease is higher in population A ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 3/12 Age-adjusted death rates are used to: - Ans:-Eliminate the effects of differences in the age distributions of populations in comparing death rates At an initial examination in Plymouth, Massachusetts, migraine headache was found in 5 of 1,000 men aged 30 to 35 years and in 10 of 1,000 women aged 30 to 35 years. The inference that women have a two times greater risk of developing migraine headache then man in this age group is ________. - Ans:-incorrect, because of failure to distinguish between incidence and prevalence Based on this table, it was concluded that workers in Industry B are at higher risk of death from respiratory system cancer than workers in Industry A. (Assume that the age distributions of the workers in the two industries are nearly identical.) Which of the following statements is true? - Ans:-The conclusion reached may be incorrect because proportionate mortality wa