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statistics for nursing a practical approach
Questions and Answers of
Statistics For Nursing A Practical Approach
You conduct a well-designed study involving a random sample. Your analysis shows this sample is normally distributed and representative of the population; however, the mean age in the sample is 29.4
You are asked to develop a study for a pharmaceutical company to determine whether taking one tablet of drug A is related to lower total cholesterol levels.How could you measure your dependent
Elevated serum lead levels in childhood are associated with lower IQ, hyperactivity, aggression, poor growth, diminished academic performance, increased delinquency, seizures, and even death. The
Construct a histogram for the ages of the adolescents. Describe the histogram and what it tells you about this sample population. Why would a histogram be an appropriate choice for presenting this
Is the pregnancy status of this group of adolescents typical? Why might that be?See the data in Table 2-7. TABLE 2-7 Demographic Characteristics of 92 Adolescents Completing a Family Planning
Elevated serum lead levels in childhood are associated with lower IQ, hyperactivity, aggression, poor growth, diminished academic performance, increased delinquency, seizures, and even death. The
You are tracking melanoma in your county. Calculate the race- and gender-specific mortality rates fromthe data provided in Table 2-10. Men Women White African American New
If you were going to design a chlamydia prevention campaign, what age group would you suggest targeting? Why?Refer to the graph in Figure 2-13. FIGURE 2-13 Incidence of Chlamydia in Florida by Age
Final exam grades are normally distributed with a mean of 81. The standard deviation is 3.What range includes 68% of the sample?
Final exam grades are normally distributed with a mean of 81. The standard deviation is 3.What is the median grade?
A researcher is measuring how many times a minute a person coughs when exposed to cigarette smoke. The results from the study are normally distributed, and they include a mean of 4 and a standard
A researcher is measuring how many times a minute a person coughs when exposed to cigarette smoke. The results from the study are normally distributed, and they include a mean of 4 and a standard
A sample of eight orthopedic patients on your unit includes two patients on intravenous anticoagulants, four patients on oral anticoagulants, and two patients on subcutaneous anticoagulants.Based on
A sample of eight orthopedic patients on your unit includes two patients on intravenous anticoagulants, four patients on oral anticoagulants, and two patients on subcutaneous anticoagulants.Calculate
A sample of eight orthopedic patients on your unit includes two patients on intravenous anticoagulants, four patients on oral anticoagulants, and two patients on subcutaneous anticoagulants.Hip
A researcher is comparing patients with high medication compliance versus those with low medication compliance in an outpatient psychiatric day program utilizing the Hamilton Anxiety Rating Scale
A researcher is comparing patients with high medication compliance versus those with low medication compliance in an outpatient psychiatric day program utilizing the Hamilton Anxiety Rating Scale
A researcher is comparing patients with high medication compliance versus those with low medication compliance in an outpatient psychiatric day program utilizing the Hamilton Anxiety Rating Scale
You have a new tool that examines outcomes in pregnancy. A previously validated tool reports that cesarean section rates in your area are 30%. The correlation between the old tool and your tool is
You are developing a new screening test and construct the test results shown in Table 4-1.Without using statistics jargon, explain what each box represents. TABLE 4-1 Test Positive Test
You are developing a new screening test and construct the test results shown in Table 4-1.What is the specificity of your new test? TABLE 4-1 Test Positive Test Negative Totals A 2×2 Table Disease
You are developing a new screening test and construct the test results shown in Table 4-1.What is the positive predictive value of your screening test? TABLE 4-1 Test Positive Test Negative Totals A
A small study was done to compare the results from three different chlamydia screening tests. The results obtained are shown in Table 4-2.If all the tests are administered in the same manner and cost
You are developing a new screening test and construct the test results shown in Table 4-1.If this disease were fatal, would you be concerned about this prevalence rate? TABLE 4-1 Test Positive Test
A small study was done to compare the results from three different chlamydia screening tests. The results obtained are shown in Table 4-2.Which screen has the highest positive predictive value? If
You are using a screening test in your clinic to detect abnormal cervical cells related to the presence of human papilloma virus (HPV). Your results are shown in Table 4-3.What is the sensitivity of
You are using a screening test in your clinic to detect abnormal cervical cells related to the presence of human papilloma virus (HPV). Your results are shown in Table 4-3.What is the positive
You are using a screening test in your clinic to detect abnormal cervical cells related to the presence of human papilloma virus (HPV). Your results are shown in Table 4-3.What is the efficacy of the
A new vaccine is developed that provides immunity to the virus causing abnormal cervical cells, and you reexamine data 2 years after the vaccine is implemented at your clinic. See the results in
A new vaccine is developed that provides immunity to the virus causing abnormal cervical cells, and you reexamine data 2 years after the vaccine is implemented at your clinic. See the results in
A new vaccine is developed that provides immunity to the virus causing abnormal cervical cells, and you reexamine data 2 years after the vaccine is implemented at your clinic. See the results in
A new vaccine is developed that provides immunity to the virus causing abnormal cervical cells, and you reexamine data 2 years after the vaccine is implemented at your clinic. See the results in
A clinical study is established to determine if the results of a screening stress test can be used as a predictor of the presence of heart disease. The study enrolls 100 participants who undergo a
A clinical study is established to determine if the results of a screening stress test can be used as a predictor of the presence of heart disease. The study enrolls 100 participants who undergo a
You are studying a new screening instrument and determine the following after screening 135 people. Of the 60 individuals who are known to have the disease, 58 screen positive. One person without the
A clinical study is established to determine if the results of a screening stress test can be used as a predictor of the presence of heart disease. The study enrolls 100 participants who undergo a
A clinical study is established to determine if the results of a screening stress test can be used as a predictor of the presence of heart disease. The study enrolls 100 participants who undergo a
What is the difference between probability and nonprobability sampling?
What is the difference between sampling error and sampling bias? Which one is very concerning to researchers?
One study used a convenience sample drawn from clients utilizing two community-based obstetric offices in an area with lower socioeconomic status. The sample was drawn largely from the community
If one of the hospitals in your sample was the regional Women’s and Children’s Hospital, would you expect the mean hemoglobin level collected at that hospital to be different from that of the
You decide to start again comparing the wait time at your clinic this year versus last year, this time programing SPSS to select every 14th patient each year. What type of sample is this? Is it a
The researcher in Review Question 12 decides that he wants his sample of 200 to be 50% female and distributes his survey at the bar to the first 100 women who arrive and the first 100 men who arrive.
You’ve been recruited by the head of the Federal Emergency Management Agency (FEMA) to act as the head triage nurse for a large city’s hurricane response team. One of your main duties is to
A diabetes educator is working with a group of 15 patients who have been newly diagnosed with type 2 diabetes. She administers a brief pretest, reviews carbohydrate counting with them, and then asks
A diabetes educator is working with a group of 15 patients who have been newly diagnosed with type 2 diabetes. She administers a brief pretest, reviews carbohydrate counting with them, and then asks
A diabetes educator is working with a group of 15 patients who have been newly diagnosed with type 2 diabetes. She administers a brief pretest, reviews carbohydrate counting with them, and then asks
A diabetes educator is working with a group of 15 patients who have been newly diagnosed with type 2 diabetes. She administers a brief pretest, reviews carbohydrate counting with them, and then asks
A researcher examining patients diagnosed with sarcoidosis would like to look at trends in their inflammatory markers. The researcher would like to use a graph that can illustrate the erythrocyte
A researcher examining patients diagnosed with sarcoidosis would like to look at trends in their inflammatory markers. The researcher would like to use a graph that can illustrate the erythrocyte
An emergency room nurse working in a hospital in the wine region of the Finger Lakes in New York has noticed a seasonal trend for ocular injuries from bottle corks. She would like to illustrate this
When the nurse looks at her data and the histogram, it is apparent that more ocular injuries from bottle corks occur in October (which is wine fermentation season) and January. She also notices that
The nurse would like to determine if more ocular injuries are associated with wine bottles from Sharespeak Winery or with wine bottles from Francesco’s winery. What would be the independent
What would be the dependent variable in review question 23?Data from Question 23The nurse would like to determine if more ocular injuries are associated with wine bottles from Sharespeak Winery or
Offer a potential explanation for why the race-specific rates may be different for whites and African Americans.
Which group has the lowest incidence of chlamydia? What explanations might the researchers offer about this data?Refer to the graph in Figure 2-13. FIGURE 2-13 Incidence of Chlamydia in Florida by
Which age group has the highest incidence of chlamydia? What explanations might the researchers offer about this data?Refer to the graph in Figure 2-13. FIGURE 2-13 Incidence of Chlamydia in Florida
Table 2-12 presents data from the CDC that tracks Ebola cases in Sierra Leone in June 2014. Complete the Cumulative Frequency columns.
Your results are 2, 14, 6, 8, 10, 4, 12, 8.What is the median?
Your results are 2, 14, 6, 8, 10, 4, 12, 8.What is the mode?
Your results are 2, 14, 6, 8, 10, 4, 12, 8.Calculate the standard deviation.
Your results are 2, 14, 6, 8, 10, 4, 12, 8.If the sample is normally distributed, 68% of the responses are within what range?
If a study reports that you have a normally distributed sample with a mean age of 17.3 years, what is the median?
A study polls 40 new mothers who attempt to nurse their infants from birth to 6 weeks. Twenty-seven mothers report nursing with minimal pain and frustration, 10 mothers report nursing with moderate
A study polls 40 new mothers who attempt to nurse their infants from birth to 6 weeks. Twenty-seven mothers report nursing with minimal pain and frustration, 10 mothers report nursing with moderate
A study polls 40 new mothers who attempt to nurse their infants from birth to 6 weeks. Twenty-seven mothers report nursing with minimal pain and frustration, 10 mothers report nursing with moderate
A study polls 40 new mothers who attempt to nurse their infants from birth to 6 weeks. Twenty-seven mothers report nursing with minimal pain and frustration, 10 mothers report nursing with moderate
A study polls 40 new mothers who attempt to nurse their infants from birth to 6 weeks. Twenty-seven mothers report nursing with minimal pain and frustration, 10 mothers report nursing with moderate
You read a study involving a new screen for rheumatoid arthritis, and the report indicates that those with the disease had the antibody levels shown in Table 3.3.Complete the cumulative frequency
You read a study involving a new screen for rheumatoid arthritis, and the report indicates that those with the disease had the antibody levels shown in Table 3.3.How many subjects had their antibody
You read a study involving a new screen for rheumatoid arthritis, and the report indicates that those with the disease had the antibody levels shown in Table 3.3.What antibody level was the mode?
You read a study involving a new screen for rheumatoid arthritis, and the report indicates that those with the disease had the antibody levels shown in Table 3.3.What antibody level was the median?
You read a study involving a new screen for rheumatoid arthritis, and the report indicates that those with the disease had the antibody levels shown in Table 3.3.What antibody level was the mean?
You read a study involving a new screen for rheumatoid arthritis, and the report indicates that those with the disease had the antibody levels shown in Table 3.3.Is this sample normally distributed?
Final exam grades are normally distributed with a mean of 81. The standard deviation is 3.What range includes 95% of the sample?
A researcher is measuring how many times a minute a person coughs when exposed to cigarette smoke. The results from the study are normally distributed, and they include a mean of 4 and a standard
A researcher is measuring how many times a minute a person coughs when exposed to cigarette smoke. The results from the study are normally distributed, and they include a mean of 4 and a standard
A researcher is measuring how many times a minute a person coughs when exposed to cigarette smoke. The results from the study are normally distributed, and they include a mean of 4 and a standard
A sample of eight orthopedic patients on your unit includes two patients on intravenous anticoagulants, four patients on oral anticoagulants, and two patients on subcutaneous anticoagulants.Calculate
A sample of eight orthopedic patients on your unit includes two patients on intravenous anticoagulants, four patients on oral anticoagulants, and two patients on subcutaneous anticoagulants.Based on
A researcher is comparing patients with high medication compliance versus those with low medication compliance in an outpatient psychiatric day program utilizing the Hamilton Anxiety Rating Scale
A researcher is comparing patients with high medication compliance versus those with low medication compliance in an outpatient psychiatric day program utilizing the Hamilton Anxiety Rating Scale
A researcher is comparing patients with high medication compliance versus those with low medication compliance in an outpatient psychiatric day program utilizing the Hamilton Anxiety Rating Scale
A researcher is comparing patients with high medication compliance versus those with low medication compliance in an outpatient psychiatric day program utilizing the Hamilton Anxiety Rating Scale
A researcher is comparing patients with high medication compliance versus those with low medication compliance in an outpatient psychiatric day program utilizing the Hamilton Anxiety Rating Scale
You are studying a new screening test. Of the 100 people who do not have a disease, 80 test negative for it with your new screen. Of the 100 people who do have the disease, 90 test positive with your
Your test is very good at correctly identifying when a person actually has a disease. Your test a measure of which of the following?a. Sensitivityb. Specificityc. Collinearityd. Effect size
Researchers conduct a study to determine if there is a relationship between receiving the flu vaccine and developing the flu within 48 hours. They report a p-value of 0.78. What general impression do
If a person has a disease and tests positive for it, the result is an example of which of the following?a. A true negativeb. A false positivec. A false negatived. A true positive
You are studying a new screening test. Of the 100 people who do not have a disease, 80 test negative for it with your new screen. Of the 100 people who do have the disease, 90 test positive with your
You are developing a new screening test and construct the test results shown in Table 4-1.How many true positives do you have? TABLE 4-1 Test Positive Test Negative Totals A 2×2 Table Disease
You are developing a new screening test and construct the test results shown in Table 4-1.What is the sensitivity of your new test? TABLE 4-1 Test Positive Test Negative Totals A 2×2 Table Disease
You are developing a new screening test and construct the test results shown in Table 4-1.Give an example of a clinical situation in which this might be a good test to use. TABLE 4-1 Test
You are developing a new screening test and construct the test results shown in Table 4-1.What is the prevalence of the disease you are testing for? TABLE 4-1 Test Positive Test Negative Totals A
A small study was done to compare the results from three different chlamydia screening tests. The results obtained are shown in Table 4-2.Which screen has the lowest specificity? Why might it still
A small study was done to compare the results from three different chlamydia screening tests. The results obtained are shown in Table 4-2.If you know that early treatment helps prevent infertility
You are using a screening test in your clinic to detect abnormal cervical cells related to the presence of human papilloma virus (HPV). Your results are shown in Table 4-3.What is the prevalence of
You are using a screening test in your clinic to detect abnormal cervical cells related to the presence of human papilloma virus (HPV). Your results are shown in Table 4-3.What is the specificity of
You are using a screening test in your clinic to detect abnormal cervical cells related to the presence of human papilloma virus (HPV). Your results are shown in Table 4-3.What is the negative
A new vaccine is developed that provides immunity to the virus causing abnormal cervical cells, and you reexamine data 2 years after the vaccine is implemented at your clinic. See the results in
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