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Question 1 of 10
1. Question
Which of the following treatment mechanisms are not advised for Congenital Adrenal Hyperplasia (CAH)?
Correct
CAH is treated with steroids that replace the low hormones. Infants and children usually take a form of cortisol called hydrocortisone. Adults take hydrocortisone, prednisone, or dexamethasone, which also replace cortisol.
Incorrect
CAH is treated with steroids that replace the low hormones. Infants and children usually take a form of cortisol called hydrocortisone. Adults take hydrocortisone, prednisone, or dexamethasone, which also replace cortisol.
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Question 2 of 10
2. Question
What is a disease likelihood ratio?
Correct
LR shows the extent to which a given test result is likely in diseased people as opposed to people without the disease.
Incorrect
LR shows the extent to which a given test result is likely in diseased people as opposed to people without the disease.
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Question 3 of 10
3. Question
What’s the major difference between test Sensitivity and Specificity?
Correct
Sensitivity is the probability of a test to correctly identify patients with a disease while Specificity is the probability of a test to correctly identify people without the disease.
Incorrect
Sensitivity is the probability of a test to correctly identify patients with a disease while Specificity is the probability of a test to correctly identify people without the disease.
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Question 4 of 10
4. Question
What does a high specificity mean?
Correct
A specific test will rarely show that someone has the disease when in a real sense they do not and is therefore good at ruling in those who have
the disease. High specificity means there is a low false-positive rate.Incorrect
A specific test will rarely show that someone has the disease when in a real sense they do not and is therefore good at ruling in those who have
the disease. High specificity means there is a low false-positive rate. -
Question 5 of 10
5. Question
On testing, what does a high sensitivity mean?
Correct
A highly sensitive test means that there are few false-negative results, and thus fewer cases have been missed probably mistakenly.
Incorrect
A highly sensitive test means that there are few false-negative results, and thus fewer cases have been missed probably mistakenly.
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Question 6 of 10
6. Question
which of the following is the difference between positive predictive value(PPV) and negative predictive value(NPV)?
Correct
Positive predictive value is the probability that subjects with a positive screening test truly have the disease. Negative predictive value is the probability that subjects with a negative screening test truly don’t have the disease.
Incorrect
Positive predictive value is the probability that subjects with a positive screening test truly have the disease. Negative predictive value is the probability that subjects with a negative screening test truly don’t have the disease.
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Question 7 of 10
7. Question
Which of the following is an advantage of a Cross-sectional study?
Correct
The advantages of cross-sectional are that the study provides an efficient means of examining a population, allowing simultaneous assessment of people with the disorder and those without it, and also the study can be used as a basis for diagnostic testing.
Incorrect
The advantages of cross-sectional are that the study provides an efficient means of examining a population, allowing simultaneous assessment of people with the disorder and those without it, and also the study can be used as a basis for diagnostic testing.
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Question 8 of 10
8. Question
What is a cohort study?
Correct
When a group of people sharing certain characteristics is assembled to study the relationships between exposures and outcomes of interest. For each possible risk factor, the members of the cohort are classified as either exposed or unexposed.
Incorrect
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Question 9 of 10
9. Question
Which of the following is a disadvantage of cohort study?
Correct
The disadvantage of a cohort study is that the process is time-consuming and expensive and it’s difficult to study rare diseases due to special requirements needed.
Incorrect
The disadvantage of a cohort study is that the process is time-consuming and expensive and it’s difficult to study rare diseases due to special requirements needed.
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Question 10 of 10
10. Question
What’s the main advantage of using a case-control study instead of using a cohort study?
Correct
The case-control study uses smaller groups than cohorts, thereby reducing cost that and also can easily be used to study rare diseases.
Incorrect
The case-control study uses smaller groups than cohorts, thereby reducing cost that and also can easily be used to study rare diseases.