June Virtual Journal Club MCQ: Summative Assessment

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Question 1 of 5

1. Question
Please complete the sentence:

A crossover trial…
- is a cross-sectional study
- should remove the impact of individual variation to the treatment
- is disadvantaged by requiring larger sample sizes
- is limited to short lived acute diseases
- should involve a period where both treatments are given
Correct

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Question 2 of 5

2. Question
Please complete the sentence:

Regression
- is a statistical method that can be used to determine the relationship between one or more predictor variables and a response variable
- does not quantify the direction of a relationship between two variables, just the strength of the relationship
- demonstrates an association between variables but not a cause-and-effect relationship between two variables
- it is not possible to predict the value of one variable using regression
- uses a single number to quantify the relationship between two variables
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Question 3 of 5

3. Question
Please complete the sentence:

An odds ratio…
- is the number of times an event happened / number of times event didn’t happen
- is the number of times an event happened / total number of events possible
- is the ratio of risk of outcome of experimental group to the risk of outcome of control group
- of 1 suggest no relationship
- is calculated by dividing the odds in the control group by the odds in the experimental group
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Question 4 of 5

4. Question
Please complete the sentence:

Risk…
- is the number of times an event happened / number of times event didn’t happen
- is the number of times an event happened / total number of events possible
- is the ratio of risk of outcome of experimental group to the risk of outcome of control group
- of 0.5% suggests there is 1 in 50 chance of an event occurring
- of 10% suggests there is 1 in 100 chance of an event occurring
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Question 5 of 5

5. Question
Please complete the sentence:

Kaplan-Meier curves…
- they visually depict the odds of an event at defined time intervals
- depict the event of interest occurring by a horizontal line
- are only used to depict survival over time in different groups
- the steepness of the curve is determined by survival durations
- were first described in 1985
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June Virtual Journal Club – High flow oxygen and risk of mortality in patients with a suspected acute coronary syndrome: pragmatic, cluster randomised, crossover trial

June Virtual Journal Club MCQ: Summative Assessment

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