Equations Flashcards
0
Q
Error factors: d = ?, O = ?
When is each equation used?
A
d = number of cases, used for IR O = observed value, used for SMR
1
Q
Incidence Rate = ?
A
New events/person years
2
Q
When are IR and IRR used?
A
For cohort studies
3
Q
Odd-cases = ?
A
Exposed cases/unexposed cases (A/B)
4
Q
Odds-controls = ?
A
Exposed controls/unexposed controls (C/D)
6
Q
Odds Ratio = ?
A
Odds of being exposed in CASES/odds of being exposed in CONTROLS (A/B / C/D)
7
Q
Incidence Rate Ratio = ?
A
Rate A/rate B (in which you are comparing risk in rate A to risk for rate B)
