LOGISTIC REGRESSION Flashcards
1
Q
what is logistic regression for?
A
to determine which variables affect the probability of a particular outcome.
2
Q
what does Risk mean?
A
the probability of having the event
3
Q
what does odds mean?
A
it compare events to non events
4
Q
what is odds ratio?
A
it quantifies the association between 2 variables.
5
Q
what is the formula for odds ratio
A
(a x d) / (b x c)
6
Q
what is the difference between logistic regression and linear regression? DV
A
logistic DV must be a binary outcome while linear regression DV must be a continuous variable.
7
Q
how do u interpret logistic regression?
A
e^B-: odds ratio- exponential of the slope
95% CI/ pvalue
the chance of having Y is e^B more likely for the exposure group than the non exposure group.
