Tag: Clinical-Nursing

epidemiology

solve the following

Which of the following is a measure of disease risk? (2 pts) A. Prevalence B. Median Survival Time C. Adjusted mortality rate D. Relative Risk (RR) E. Odds of Exposure

Questions 2 and 3 are based on the information below:

Incidence of Coronary Heart Disease (CHD) in Men, According to Initial Cholesterol Level, Followed Over a 10 Year Period (1985-1995) CHD incidence (per 1,000 men) Cholesterol level in 1985 (mg/dL) 300 40 80 140

2. The data in the above table have been obtained from a: (2 pts) A. Case-control study B. Cohort study C. Cross sectional study D. Ecological study E. Cannot be determined from these data

3. The relative risk (RR) of coronary heart disease for men in the highest cholesterol group compared to the lowest group is: (3 pts) A. 140 – 40 = 100 per 1,000 B. 40/140 = 0.29 C. 140/40 = 3.50 D. Cannot be determined from these data

4. If there were no association between an exposure and disease, one would expect the following: (2 pts) A. Relative risk = 1.0 ; Proportion attributable risk = 1.0 B. Relative risk < 1.0 ; Proportion attributable risk < 50% C. Relative risk > 1.1; Proportion attributable risk > 50% D. Relative risk = 1.0; Proportion attributable risk = 0%

5. When a new treatment is developed which prevents death but does not result in the recovery from a non-infectious disease, which of the following will occur? (3 pts) A. Incidence of the disease will decrease B. Prevalence of the disease will increase C. Prevalence of the disease will decrease D. Both the incidence and the prevalence of the disease will increase

6. From January 1988 until March 1990 a research group in New Zealand followed 2,607 infants from the day they were born. Mothers were asked, “What position does your baby usually sleep in?” Mothers of 830 infants reported that their baby slept prone (on its stomach). Among this group, there were 9 infant deaths from Sudden Infant Death Syndrome (SIDS). The remaining 1,777 mothers reported that their baby slept on its side or its back. Among this group, there were 6 deaths from SIDS.

a. What type of study is this? (2 pts)

b. Construct a 2 x 2 table for these data. (4 pts)

c. Calculate the appropriate measure of association and state in words what this number means (one sentence). Show calculations. (6 pts)

7. Are the following examples of incidence or prevalence? Please put your answers under each example. (2 pts each) a. “Rates [of pancreatic cancer] increase rapidly with age as seen in data from the United States, where the rates for patients ages 70–74 are about 57 per 100,000 per year compared to rates of 9.8 per 100,000 in patients age 50–54.” (Lowenfels and Maisonneuve, 2006, p. 200.)

b. “Nearly 5 million asthma sufferers are under age 18. It is the most common chronic childhood disease, affecting more than one child in 20.” (Morbidity and Mortality Weekly Report, NCHS, U.S. CDC, 2003.)

c. Over the past five years, 350 cases of over-worked graduate students have been diagnosed at Drexel University.

8. Match the appropriate sequence of data collection (1-3) with each study design listed below (i.e., for each study design, fill in 1, 2 or 3). (2 pts each)

1. Determine exposure status first, and then collect disease status information. 2. Determine disease status first, and then collect exposure history information. 3. Determine disease status and exposure status at the same point in time.

____ Cross-Sectional Study ____ Cohort Study ____ Case Control Study

9. Match the following strengths to the appropriate study design: (2 pts each) a. Investigation of multiple exposures ____ Case Series b. Investigation of new or emerging diseases ____ Cohort c. Investigator assigns exposure ____ Randomized Clinical Trials d. Ability to calculate incidence rates ____ Case-Control

10. You are conducting a prospective study of hepatitis B virus (HBV) infection and its relation to liver failure. Normally, the immune system neutralizes the virus and most infected people are left with HBV antibodies but no detectable circulating virus. A small proportion of people who are infected with HBV remain with circulating virus itself (HBV viremic) and it is this group that is believed to be at high risk of liver failure. You put together a cohort study of 500 persons who are HBV viremic and 500 persons with HBV antibodies but who do not have detectable virus. You follow this cohort for five years. Among the first group that are HBV viremic, 50 persons develop liver failure: 5 at 10 months, 10 at 20 months, 20 at 36 months, 10 at 42 months, and 5 at 50 months. Among the second group that are HBV antibody positive but who do not have detectable virus (i.e., HBV non-viremic), 10 persons develop liver failure: 5 at 32 months and 5 at 55 months.

a. Calculate the person-time of follow up for each group. Show calculations. (6 pts)

b. Calculate the liver failure incidence rate for each group (i.e., HBV viremic and HBV non-viremic). Express each rate with an appropriate metric in the denominators. Show calculations. (6 pts)

c. How much of an increase of liver failure incidence is seen among persons with detectable HBV virus compared with those who have HBV antibodies but no detectable virus? Give results for absolute and relative differences of incidence. Show calculations. (6 pts)

d. Interpret each measure calculated in 10c above (one sentence each). (6 pts)

11. Which of the following is an appropriate measure of association for a cross-sectional study? (2 pts) a. Incidence rate ratio b. Prevalence ratio c. Cumulative incidence ratio d. Risk difference

12. A relative risk of 1.0 is interpreted as: (2 pts) a. A protective association between the exposure and the disease b. A weak or moderate positive association between the exposure and the disease c. No association between the exposure and the disease d. Cannot be determined without knowing the specific exposure and the disease

13. Why do we age-standardize (age-adjust) incidence data to compare disease incidence between two different populations? Explain and give an example. (6 pts)

14. The tables below come from a case-control study of cervical cancer and test results for exposure to human papilloma virus (HPV).

Cervical Cancer No Cervical Cancer HPV positive 120 18 HPV negative 70 41

After stratifying the above data by smoking status, the following tables were obtained:

Cervical Cancer No Cervical Cancer Smokers HPV positive 100 10 HPV negative 25 5

Cervical Cancer No Cervical Cancer Non Smokers HPV positive 20 8 HPV negative 45 36

a. Before stratifying on smoking behavior, what is the overall odds ratio (OR) found by the study? (3 pts) A. 2.0 B. 1.4 C. 1.0 D. 3.9 E. Cannot be determined from these data.

c. What is the odds ratio for HPV exposure and cervical cancer among smokers only? (3 pts) A. 2.0 B. 1.4 C. 1.0 D. 3.9 E. Cannot be determined from these data.

b. Based on the data above, which statement describes the relationship between cervical cancer and HPV? (3 pts) A. Cervical cancer cases are more likely than controls to have been exposed to HPV. B. When stratified by smoking status, cervical cancer is not associated with HPV in either stratum. C. When stratified by smoking status, there is a stronger association between cervical cancer and HPV in smokers than in non-smokers. D. Cervical cancer is not associated with HPV. E. A cohort study must be done in order to describe the relationship.

15. Disease-specific mortality rates can give a good estimate of the incidence of the disease when the following condition is true: (3 pts) A. The prevalence of the disease is high and duration of disease is short B. The incidence of the disease is high and duration of disease is short C. The mortality rates are age-adjusted D. The case-fatality rate is high and the duration of disease is short E. The crude mortality rate equals the age-adjusted mortality rate

16. The strength of an association is one of the criteria for evaluating the cause and effect relationship between an exposure and outcome. Which of the following is a measure of the strength of association? (2 pts) A. Incidence rate among the exposed B. Cumulative incidence among the exposed C. The ratio of odds of exposure among cases to the odds of exposure among the non-cases D. Odds of disease among exposed relative to the prevalence of exposure in the source population E. None of the above

17. In 2002, investigators started a study of the association of cholesterol levels and stroke in a group of 2,000 healthy persons who had participated in a cholesterol screening program in 1992. The investigators determined exposure categories using cholesterol levels in all persons that were measured at the time of the screening program. A cut-off value of 200 mg/dL was used to define ‘high’ cholesterol while those with levels below 200 were identified as having ‘low’ cholesterol. Using this definition, 1,000 persons had ‘high’ cholesterol levels while the remaining 1,000 persons had ‘low’ cholesterol. The investigators then ascertained whether these originally healthy persons had experienced a stroke. They determined that 150 cases of stroke occurred by the end of 2002, with 113 cases occurring in the high cholesterol group.

a. What is the study design that the investigators used? (2 pts) A. Case-control study B. Retrospective cohort study C. Prospective cohort study D. Cross-sectional study E. Randomized clinical trial

b. What type of measure of association should the investigators calculate? (2 pts) A. Odds ratio B. Prevalence C. Case-fatality rate D. Prevalence ratio E. Relative risk

c. Using the reported study data, what is the association measure that should be calculated? (3 pts) A. 3.1 B. 3.3 C. 67% D. 1.0 E. 0.3

18. The two major purposes of random assignment in a clinical trial are to (select two): (4 pts) A. ensure that study subjects are representative of the general population B. facilitate double-blinding C. ensure that the study groups are comparable on baseline characteristics D. facilitate measurement of outcome variables E. reduce selection bias in allocation of treatment

19. The prevalence of a disease is two times greater in women than in men, but the incidence rates are the same in men and women. Which of the following statements may best explain this situation? (3 pts) A. The duration of the disease is shorter in women. B. The case-fatality rate is lower in women. C. The prevalence of risk factors for developing the disease is greater in men. D. The age-adjusted mortality rate is higher in women. E. The life-expectancy following disease diagnosis is shorter in women.

20. If Disease A has an incidence rate of 17 cases per 100,000 per year and an average duration of 3 years, how many existing cases of the disease will be found in a population of 200,000 people? (3 pts) A. 17 cases B. 34 cases C. 51 cases D. 102 cases E. Cannot be determined from these data

Write a paper (1,250-1,750 words) describing the approach to care of cancer. In addition, include the following in your paper:

Describe the diagnosis and staging of cancer.

Describe at least three complications of cancer, the side effects of treatment, and methods to lessen physical and psychological effects.

Prepare this assignment according to the APA guidelines found in the APA Style Guide, located in the Student Success Center. An abstract is not required.

This assignment uses a grading rubric. Instructors will be using the

rubric to grade the assignment; therefore, students should review the rubric prior to beginning the assignment to become familiar with the assignment criteria and expectations for successful completion of the assignment.

You are required to submit this assignment to Turnitin. Refer to the directions in the Student Success Center. Only Word documents can be submitted to Turnitin.

I need a 7 page paper on the zika virus. It must include 6 references, abstract, introduction, disease description, history, symptoms, reason for reemergence, and methods of control/prevention.

Anatomy and Physiology I Module 5 – Case Senses and the Endocrine System

In this module, you were introduced to the endocrine system and learned about the various endocrine glands in the body. Like everything else we have learned about in anatomy and physiology, we never “think” about normal functioning until it is compromised. For this case assignment, I would like you to select one endocrine gland. In this assignment, you will prepare a 2-3 page paper in which you describe:

1. The location and normal physiology (function) of the endocrine gland you have selected.

2. Discuss the hormone secreted by the endocrine gland. (eg. what are the effects of the hormone in the body?)

3. What is the feedback mechanism by which hormone secretion is inhibited?

4. Discuss the anatomy/physiology of one condition associated with the malfunction of the endocrine gland you have selected? (eg. a disease associated with endocrine gland malfunction)

SWOT Analysis

Conducting a SWOT analysis can have tremendous value in preparing for planned change.

To prepare:

Conduct a SWOT analysis for your Course Project, incorporating any insights you have gained from this week’s Discussion. Identify two strengths, two weaknesses, two opportunities, and two threats that warrant attention relative to the identified unmet need.

Reflect on how you distinguished between weaknesses and threats and consider whether the threats or weaknesses also pose opportunities.

To complete:

Write a 2- to 3-page summary that conveys the results of your SWOT analysis. Include:

Two strengths

Two weaknesses

Two opportunities

Two threats

An explanation of whether the threats or weaknesses also pose opportunities

As a hospice nurse, you are involved with pain control on a regular basis. Many of the medications prescribed for the management of pain also depress respirations. Determine a protocol for the use of these medications, keeping in mind that the purpose of hospice is to promote comfort. Support your decisions with ethical theories and principles.

Strategic planning involves reciprocity of analysis and action. Over the previous weeks of this course, you have been examining foundational elements of the strategic planning process. As you move forward, you will apply these concepts to the development of a strategic plan.

Through the Course Project, you will identify an unmet need within a group, unit, or organization and develop a comprehensive strategic plan to address the need. You will develop your project over the next several weeks, culminating in Last week.

Note: Your complete project will serve as your Portfolio Assignment for this course.

To prepare for the upcoming work on this project:

Review the Course Project Overview in this week’s Learning Resources to become familiar with the project components and due dates.

Reflect on the trends addressed in this week’s Discussion. Think about which of these trends, or any additional ones, stand out as being particularly relevant to your own interests and the professional contributions you would like to make now and in the future.

Think about how one or more of these trends relates to an unmet need evident in a specific group, unit, or organization. For example, you might choose the unit in which you currently work or a professional association to which you belong.

Consider how you could address this unmet need through strategic planning. What is your vision and goal(s)?

Begin to analyze historical data and engage in forecasting to investigate opportunities for change.

Course Project: Developing a Strategic Plan

Section 1: Summary of the Issue

To prepare for and set the stage for your Course Project, this week you begin to develop a summary of the issue you will address through the creation of a strategic plan.

You may wish to review the Course Project Overview, which outlines the project components and due dates.

To prepare:

Consider the information on strategic planning presented by Dr. Huston in this week’s media program, as well as in the other Learning Resources.

Reflect on the unmet need you identified in this week’s Discussion, and consider any feedback you have received to your posting from your Instructor and colleagues. If appropriate, refine your focus to clarify the unmet need.

In addition to the steps you took in preparation for the Discussion, proceed as follows:

Investigate the background related to this unmet need. What conditions have contributed to this situation? Is there data (beyond what you identified for the Discussion) that should be examined?

Conduct research to assess what has been attempted in the past, by various individuals or organizations, to address this unmet need.

Think about any broader issues that should be examined to better understand this unmet need. For instance, consider economic, political, and/or social considerations.

Begin to draft your 2- to 3-page summary of the Issue (which will be submitted next week). In your summary, identify and/or describe:

The unmet need and how it is evident in the specific group, unit, or organization

The mission, vision, and values of the group, unit, or organization

Background, including:

Data from historical analysis and forecasting

Evidence from the literature

What has been attempted in the past by various individuals and groups to address this need

Which stakeholders should be included in the strategic planning process

Initial vision for addressing this need at the organizational or systems level, including at least one strategic goal

Broader issues to be considered

Use information from the health care center or the Internet to create a one-page cause-and-effect flow sheet. Your flow sheet on Syphilis should include the following:

Various factors that lead to frequent outbreaks of the disease

Stages of disease progression

Clinical indicators of the disease

What are some misconceptions when communicating with diverse populations? What are some steps a health educator can take in order to ensure the population they are communicating with understands the material being delivered? Provide at least one example.

In a two- to three-page critical thinking paper:

Select one the following vulnerable populations:

High-risk mothers and infants

Chronically ill and disabled

Persons living with HIV/AIDS

Mentally Ill and Disabled

Alcohol or Substance Abusers

Suicide or Homicide Prone

Abusing Families

Homeless Persons

Immigrants and Refugees

Describe applicable variables related to vulnerability for the population

selected:

Age: – infants/children and oldest old are more vulnerable

Gender- Chronic illness: Menare more likely to die of chronic

diseases/women are more likely to experiences more physical limitations due to

chronic illness

Race- Minority populations (African American, Hispanic, and Native American)

are much more likely to be in poor health than the majority populations

(Caucasians)

Income and education- More years of formal education and higher incomes are

directly associated with better health

Analyze the effect of multiple variables on the population selected in terms

of morbidity, mortality, and health.

The paper must be a minimum of two pages in length (excluding the title and

reference pages) and utilize APA format. Include a minimum of 3 references, in

addition to the textbook, cited in APA format. No plagerism Please