Project #45815 - Epidemiology

Which of the following is not one of the four criteria for the utility of epidemiologic data?
 
 
 
 
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Which of the following data sources is most likely to be representative of the general health status of a population
 
 
 
 
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What data source has the advantage of being almost nearly complete in the U.S.? 
 
 
 
 
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Cautious use of information from death certificates is warranted because:
 
 
 
 
 
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The Vital Statistics Registration System in the U.S. collects data on all vital events including: 


 
 
 
 
 
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In case-control studies, the odds ratio is used as an estimate of the relative risk. In order for this approximation to be reasonable, some conditions must be met. Which of the following conditions is not necessary in order to use the odds ratio to estimate the relative risk?
 
 
 
 
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Case-control studies are among the best observational designs to study diseases of
 
 
 
 
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A large medical center’s oncology program reported an increased number of cases of pancreatic cancer during a certain month. The hospital’s epidemiologist decided to research the problem. Tumor registry records were searched to identify all cases of pancreatic cancer during a five-year period; cancer patients were matched with patients treated for other diseases during the same five-year period. All subjects in the study were questioned about lifestyle factors including alcohol, tea, and coffee consumption. The resulting data are as follows:

 
Cancer Patients
Other Patients
 
Men
Women
Men
Women
LIFESTYLE VARIABLE
 
Alcohol
185
120
270
260
Tea Drinking
140
110
230
225
Coffee Drinking
190
140
270
240
 
Note:   Total number of male cancer patients = 200.
            Total number of female cancer patients = 150.
            Total number of male patients (other diseases) = 300.
            Total number of female patients (other diseases) = 300.

Use this data to answer the next 5 questions.
 
What type of study is this? 
 
 
 
 
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Does this study have an exposure status variable?
 
 
 
 
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Which number best approximates risk associated with Alcohol Drinking among Men: 
 
 
 
 
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Which number best approximates risk associated with Coffee Drinking among Men? 
 
 
 
 
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Based on your calculations above, which factor has the strongest association with cancer for men?
 
 
 
 
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Cohort study is to risk ratio as:
 
 
 
 
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A five-year prospective cohort study has just been completed. The study was designed to assess the association between supplemental vitamin A exposure and mortality and morbidity for measles. The RR for incidence of measles was 0.75 and the RR for measles mortality was 0.5. 

Which statement is correct? 
 
 
 
 
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Regarding the RR reported above, which statement is correct
 
 
 
 
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Subjects for an exposure-based cohort study (when the exposure of interest is rare) would be selected Most appropriately from:
 
 
 
 
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Nested case-control studies:
 
 
 
 
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Practical considerations in the design of cohort studies do not usually include
 
 
 
 
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The purpose of double-blinding in clinical trials is to
 
 
 
 
 
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Phase III clinical trials for a cancer drug involve
 
 
 
 
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The purpose of randomization is to
 
 
 
 
 
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Which types of health issues are likely to be addressed in community trials
 
 
 
 
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You would like to assess the effectiveness and efficiency of delivering health services through your clinic. After selecting a 10% sample of all patient visits during the past six months, you are able to characterize the patient population utilizing your clinic in terms of age, race, sex, method of referral, diagnostic category, therapy provided, method of payment, daily patient load, and clinic staff work schedules. 

Which type of study design most appropriately characterizes this situation?
 
 
 
 
 
 
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You are interested in finding out whether middle-aged men who have premature heartbeats are at greater risk of developing a myocardial infarction (heart attack) than men whose heartbeats are regular. Electrocardiogram (ECG) examinations are performed on all male office employees 35 years of age or older who work for oil companies in Houston. The ECG tracings are classified as irregular or regular. Five years later, myocardial infarction rates are compared between those with and those without baseline ECG irregularities. 

Which type of study design most appropriately characterizes this situation?
 
 
 
 
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Ecological studies are an analytical study design that are advantageous in many ways. Which is not true about the ecological study design?
 
 
 
 
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Due By (Pacific Time) 11/02/2014 05:00 pm
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