Odds and Risk Flashcards
1
Q
What is the equation for odds?
A
Odds = number of patirents achieving end point/number of patients not acheiving end point
2
Q
What is the equation for odds ratio?
A
Odds for treatment group/ odds for control group
3
Q
What does it mean if the odds ratio = 1?
A
odds = the same
4
Q
What if the odds ratio is less than 1?
A
Treatment is not working
5
Q
What if the odds ratio is more than 1?
A
- Treatment is working - more people recovered
6
Q
What is the equation for risk?
A
Risk = no of patients achieving end point/ total number of patients
7
Q
What is the equation for risk ratio?
A
Risk ratio = risk for one group/ risk for another group
8
Q
What does it mean if the risk ratio is 1?
A
- Risk is the same
9
Q
What does it mean if the risk ratio is less than 1?
A
I on top = greater risk
10
Q
What does it mean if the risk ratio is more than1?
A
- 1 on top is less likely to happen
