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6530 questions found
A.
Small sample size makes the finding more reliable.
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B.
Small sample size can lead to unstable estimates and findings that may not replicate in larger studies.
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C.
The p-value is always accurate regardless of sample size.
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D.
The study had high power.
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A.
The null hypothesis assumes the new drug is inferior by a pre-specified margin.
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B.
The null hypothesis assumes the new drug is superior.
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C.
The significance level is ignored.
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D.
Non-inferiority trials do not use hypothesis testing.
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A.
Simple linear regression.
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B.
Multiple linear regression.
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C.
Multiple logistic regression.
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A.
To immediately stop the trial because of small benefits.
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B.
To weigh the statistical significance against the clinical relevance and potential harms, recognizing that a statistically significant effect may not be clinically meaningful.
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C.
To continue the trial regardless of clinical significance.
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D.
To only consider the p-value.
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A.
Alternative hypothesis.
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B.
Research hypothesis.
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D.
Statistical hypothesis.
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A.
The null hypothesis of no effect is likely true.
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B.
The null hypothesis of no effect can be rejected because the interval does not include zero.
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C.
The drug is harmful.
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D.
The confidence interval is too wide.
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A.
Independent samples t-test.
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C.
Independent samples t-test.
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A.
It makes it easier to recruit participants.
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B.
It often necessitates a very large sample size to detect a meaningful effect, which can be challenging to achieve.
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C.
Sample size is irrelevant for rare diseases.
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D.
It means the drug will always be effective.
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A.
Simple linear regression.
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B.
Multiple linear regression.
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C.
Normally distributed.
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A.
To immediately impute all missing values.
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B.
To investigate the pattern of missingness and assess its potential impact on bias and the validity of results.
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C.
To ignore the missing values if they are less than 5%.
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D.
To discard all records with missing values.
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A.
The p-value is too high.
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B.
The study had too much power.
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C.
Loss to follow-up can introduce bias and threaten the internal validity of the study.
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D.
The drug is definitely effective.
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