Quiz Module 2 - Class #1

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Question 1 of 5

1. Question

1. In relation to descriptive observational studies, it is correct to affirm that:

a) They are designed to assess effect of preventive strategies.
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b) They always determine causality of a given disease/condition.
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c) Frequently such studies compare exposed/non-exposed individuals to a possible risk factor.
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d) They allow to assess prevalence of a given disease/condition.
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e) None of the above are correct.
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Question 2 of 5

2. Question

2. Considering analytical observational studies, it is correct to affirm that:

a) They use statistics and association with risk factors/indicators may be achieved.
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b) They might be cross-sectional or longitudinal.
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c) They test hypothesis, but causality is only achieved in longitudinal designs.
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d) A and B are correct.
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e) A, B and C are correct.
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Question 3 of 5

3. Question

3. In relation to sampling procedures, it is correct to affirm that:

a) A Census is a type of sampling.
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b) A representative sample should reflect the situation of a population.
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c) Sampling strategies are needed in small populations.
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d) A systematic sample is non-probabilistic.
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e) A convenience sample has good external validity.
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Question 4 of 5

4. Question

4. Considering prevalence studies, it is correct to affirm that:

a) They need ethical approval only if performed in children/adolescents or vulnerable populations.
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b) They can only collect data from one disease/condition.
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c) The examiner(s) need to be trained/calibrated.
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d) Representativity is not desired.
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e) They are only accepted in local journals.
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Question 5 of 5

5. Question

5. Considering reliability of a study, it is correct to affirm that:

a) Training and calibration of the examiners are the same procedure.
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b) As training/calibration occurs before the start of the study, no ethical clearance is needed.
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c) Reproducibility of measurements is needed only for clinical outcomes.
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d) Studies with more than one examiner need intra and inter-examiner calibration.
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e) In the publication, reproducibility does not need to be mentioned.
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Quiz Module 2 – Class #1

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