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FALSE
The prevalence rate is comparable to risk ratio. If the duration of disease in exposed and unexposed groups is equal prevalence rate will not estimate the rate ratio. The prevalence of the disease is determined by the incidence and duration of the disease.
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If there is 1) little difference in the duration of disease and 2) little difference in...
1. Cross-sectional study can not measure Incidence risk Prevalence Seroprevalence 2. Which study yo...
1. Cross-sectional study can not measure Incidence risk Prevalence Seroprevalence 2. Which study you generally conduct if you are interested in studying the risk factors of diabetes in a population in an ethically and scientifically convincing way? Case-Control Cross-sectional study Experimental study Cohort study 3. Prevalence of disease in exposed is not different than the prevalence of exposure among diseased False True 4. Sero-prevalence study is also called Cross-sectional study Cohort study Experimental study Case reports 5. Which one of...
Managerial Epidemiology Cases & Concepts Third Edition, Steven T. Fleming , Editor Capstone Case I: Sleep...
Managerial Epidemiology Cases & Concepts Third Edition, Steven T. Fleming , Editor Capstone Case I: Sleep duration and Cardiovascular Disease: A Cross- Sectional Study page 617 Q#3. Exhibit l.1 presents the number of cases and population at risk for various types of CVD. Consider sleeping seven hours per night the unexposed category and all other sleep duration exposed groups. Calculate the prevalence rate(per 100) of each type of CVD by exposure category using exhibit l.1 as a template.
Choose the study design that best matches each measure of disease frequency or association listed below....
Choose the study design that best matches each measure of disease frequency or association listed below. The study design may be used more than once or none at all. (10 points) Measure of Frequency/Association Study Design ____ Correlation Coefficient Case-Control ____ Incidence Rate & Incidence Density (without intervention) Cross-sectional ____ Relative Risk in treatment vs control group Ecological ____ Odds Ratio of Exposure Cohort ____ Prevalence of Disease (snapshot) Randomized Clinical Trial ____ Relative difference between treatments ____ Prevalence Rate...
n Table 1 below, all true cases and true controls in a reference (total) population of...
n Table 1 below, all true cases and true controls in a reference (total) population of 10,000 subjects are included in a case-control study assessing the relationship of risk factor A with disease Y. Calculate the exposure odds for both groups and the exposure odds ratio given these data Table 1: Cases Controls 500 Exposed Unexposed 5007200 1800 1000 9000
True or False 1.A key difference between analytic and descriptive studies this that analytic studies are...
True or False 1.A key difference between analytic and descriptive studies this that analytic studies are causally oriented. True or False 2.If the relative risk of developing diabetes among residents of Springfield and Boston is 1 it means that the risk of developing diabetes is the same in both cities. True or False 3.Cohort studies are often used to study rare health outcomes. True or False 4.Sensitivity and specificity of a screening test is the same in all populations. True...
Incidence and prevalence rates can also be used to compare the rates of disease across different...
Incidence and prevalence rates can also be used to compare the rates of disease across different settings (places), people, or time. We therefore need measures of comparison. The ratio of two measures of disease frequency is called the relative risk. The difference between two measures of disease frequency is called the risk difference, or rate difference. In some cases, it involves a measure in an exposed group (or groups) and a measure in an unexposed or comparison group. In other...
A different group of researchers conducted a similar cross-sectional study to examine the association between regular...
A different group of researchers conducted a similar cross-sectional study to examine the association between regular alcohol consumption (exposure) and liver cirrhosis (outcome) but used a different study sample. They obtained a prevalence ratio (PR) of disease of 1.60 for the association between alcohol consumption and liver cirrhosis. Which of the following is the correct interpretation of the prevalence ratio (PR)? a) The risk of liver cirrhosis among regular alcohol consumers of alcohol is 1.6 times that of non-regular alcohol...
9. When you desire to study the effects of a rare exposure on a disease using...
9. When you desire to study the effects of a rare exposure on a disease using observational methods, you would optimally employ the type of study design. Remember you would likely need to conduct your study in a place where the exposure occurs. cohort b ase-control 10. Another name for a retrospective study is an) study b. cohort e experimental 11. You have completed a year long study of the effectiveness of a reading program among second graders. At the...
question completion Status: QUESTION 1 2 points We want to test the effectiveness of a pre-exposure...
question completion Status: QUESTION 1 2 points We want to test the effectiveness of a pre-exposure prophylaxis (PrEP). Participants are given the pill or not. Each person meets with the researchers once a year for 3 years to check their HIV status. This might be an example of which study design RCT Cross-sectional study Prospective cohort study Case-control study QUESTION 2 The cross products ratio closely approximates the relative risk for case-control studies and cohort studies True False 2 points...
Outcome Exposure Asthma No Asthma Total Smoker in the household 418 1003 1421 No smoker in...
Outcome Exposure Asthma No Asthma Total Smoker in the household 418 1003 1421 No smoker in the household 352 1235 1587 Total 770 2238 3008 A cross-sectional study examined children between the ages of 1 and 17 to determine the prevalence of asthma and of indoor environmental risk factors for childhood asthma. Data was collected by questionnaires, which were completed by each child's primary caretaker. Having a smoker in the household was found to be a significant risk factor for...
n Table 1 below, all true cases and true controls in a reference (total) population of 10,000 subjects are included in a case-control study assessing the relationship of risk factor A with disease Y. Calculate the exposure odds for both groups and the exposure odds ratio given these data Table 1: Cases Controls 500 Exposed Unexposed 5007200 1800 1000 9000
A different group of researchers conducted a similar cross-sectional study to examine the association between regular alcohol consumption (exposure) and liver cirrhosis (outcome) but used a different study sample. They obtained a prevalence ratio (PR) of disease of 1.60 for the association between alcohol consumption and liver cirrhosis. Which of the following is the correct interpretation of the prevalence ratio (PR)? a) The risk of liver cirrhosis among regular alcohol consumers of alcohol is 1.6 times that of non-regular alcohol...
9. When you desire to study the effects of a rare exposure on a disease using observational methods, you would optimally employ the type of study design. Remember you would likely need to conduct your study in a place where the exposure occurs. cohort b ase-control 10. Another name for a retrospective study is an) study b. cohort e experimental 11. You have completed a year long study of the effectiveness of a reading program among second graders. At the...
question completion Status: QUESTION 1 2 points We want to test the effectiveness of a pre-exposure prophylaxis (PrEP). Participants are given the pill or not. Each person meets with the researchers once a year for 3 years to check their HIV status. This might be an example of which study design RCT Cross-sectional study Prospective cohort study Case-control study QUESTION 2 The cross products ratio closely approximates the relative risk for case-control studies and cohort studies True False 2 points...
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