NR503 EXAM WITH LATEST QUESTION AND 100% CORRECT ANSWERS ALREADY GRADED A+

NR503 EXAM WITH LATEST QUESTION AND 100% CORRECT ANSWERS ALREADY GRADED A+ The nurse practitioner is reviewing a recent study that utilizes analytic epidemiology by means of a cohort study design. The cohort study design informs the practitioner about which of the following - ANS-Outcomes that develop from an exposure A group of providers have implemented population-based intervention and are now assessing the efficacy of the intervention. Which of the following would be an example of a population based outcome? - ANS-Decreased mortality rate compared to previous year Appraisal of research publications is critical as providers assess for relevance to population health. Which of the following items should be considered during the appraisal process? Select all that apply. - ANS-Outcome measure, Transparency, Internal Validity What is being compared in a cohort study design? - ANS-The incidence of a disease between exposed and non-exposed individuals Analytic epidemiology is best described as: - ANS-Studies that investigate origins and casuals' factors of health-related events You are part of a research group investigating association between exposure and disease. Which study design is a best fit for this type of study: - ANS-Case-Control Study The provider is concerned about what appears to be an increase in the mortality rate for their community. Mortality is an example of which of the following: - ANS-Vital statistic An example of a tertiary prevention measure for chronic obstructive pulmonary disease is: - ANSPulmonary Rehabilitation Which of the following statements best describe efficacy? - ANS-It is an estimate of the benefit of treatment under ideal conditions It is an estimate of the reduction of disease in treated groups Which of the food items (or combination of items) is most likely to be the infective item(s)? - ANS-Ice cream only Which of the following reasons can explain why a person who did not consume the infective food item got sick? - ANS-All of the above Which of the following are examples of a population prevalence rate? - ANS-The number of persons with hypertension per 100,000 population The table above describes the number of illnesses and deaths caused by plague in four communities. The case-fatality rate associated with plague is lowest in which community? - ANS-Community C What would be the effect on age-specific incidence rates of uterine cancer if women with hysterectomies were excluded from the denominator of incidence calculations assuming that most women who have had hysterectomies are older than 50 years of age? - ANS-Rates would increase in women older than 50 years of age but may decrease in younger women as they get older A study is conducted for a pharmaceutical agent that has shown promise for reducing heart disease among women. In order to more fully test the agent, an additional study is done restricting the participants to be randomized to those who have a history of hypertension. Which of the following advantages cannot be claimed by the researchers? - ANS-The generalizability of the study is increased What is the main advantage of the randomization of the 168 study participants to one of the two drug treatment groups? - ANS-Reduces selection bias After entry into the study, patients were first classified into three groups, those who had a previous AMI, those with a first AMI who were at high risk for other cardiovascular diseases such as congestive heart failure, and those with a first AMI who were at low risk for other cardiovascular diseases. Which term best describes the study design? - ANS-Randomized clinical trial with stratified randomization After assignment to treatment group, 77% of those in the placebo group were men, while 80% of those in the drug X group were men. Which statement is most likely to be true? - ANS-Randomization was successful since the investigators did not alter the selection of participants in either group in order to ensure equal percentages of men A preliminary analysis was conducted after 6 months and found that 87% of participants in the placebo group and 85% of those in the drug X group had taken more than 90% of their prescribed dosages. Which statement best describes this finding? - ANS-The characteristics of patients who failed to comply with the treatment dosages should be assessed as they may differ from those who complied Which of the following statements best describes the reason for conducting the study as a double-blind trial? - ANS-Double blinding ensures that potential biases regarding selection, follow-up, and analysis can be reduced The following data come from a study of approaches to smoking cessation. Smokers who want to quit were randomized to one of four groups: control ..... brochures and a monthly phone call from a counselor. Participants received mailed surveys at 8, 16, and 24 months after randomization. The results after 2 years are in the table below. Which group had the least success in terms of quitting smoking? - ANS-Group QS The following data come from a study of approaches to smoking cessation. Smokers who want to quit were randomized to one of four groups: control group C who received no intervention assistance, quitting guide group Q who received brochures about how to quit smoking, quitting guide and support group QS who received quitting brochures as well as social support brochures listing benefits of smoking cessation, and telephone support group T who received the brochures and a monthly phone call from a counselor. Participants received mailed surveys at 8, 16, and 24 months after randomization. The results after 2 years are in the table below. What is the main purpose of randomization in this study? - ANS-To avoid assigning more persons who have tried and failed to quit in the past to the control group