Biostatistics Cheat Sheet Flashcards
If The…
Sample size decreases
… it will…
Make the study require less resource to perform
If The…
Sample size increases
… it will…
Increased the power
If The…
Power increases
… it will…
Make result more reliable
If The…
Confidence intervall narrows
… it will…
reduce uncertainty
If The…
P-value gets smaller
… it will…
Reduce likelihood outcomes occured by chance
If The…
Standard deviation gets smaller
… it will…
Imply reduced variability in the sample
If The…
Data is not normally distributed
… it will…
Not allow for parametric tests to be used
If The…
Odds ratio is <1
… it will…
Make the outcome less likely in the intervention group
If The…
relative risk is <1
… it will…
Suggest a negative association between the intervention group
If The…
ARR
(Absolute Risk Reduction)
becomes less
… it will…
Mean the intervention is less meaningful
If The…
Alpha increases
… it will…
Increase the change of a type 1 error
If The…
Beta increases
… it will…
Increase the chance of a type 1 error
If The…
Study has extreme outliers
… it will…
Not impact the median as much as it would impact the mean
When the…
Data is being produced by a project is intended to contribute to generalizable knowledge
… it means…
It is research project
When the…
Study poses any threat to human subject
… it means…
IRB approval is required
