P-values and confidence intervals Flashcards
1
Q
What is the point of statistical tests?
A
It determines whether we can reject the null hypothesis and accept the alternative hypothesis
or fail to reject the null hypothesis
2
Q
What is absolute risk?
A
The probability of an outcome occurring in a sample group or population
number of people with outcome/total number of people
3
Q
What is relative risk (risk ratio)?
A
The probability of an outcome occurring in one group compared to another
absolute risk 1/absolute risk 2
4
Q
Risk vs odds
A
Risk is the number of people with outcome / total number of people
Odds is the number of people with outcome/ number of people without outcome
5
Q
What does it indicate if the odds ratio is 1?
A
There is no difference in risk between groups
