logistic regression - exp(estimates)?
On 16/01/2009, at 1:50 AM, gregor rolshausen wrote:
hello. I have a question on the interpretation of a logistic model. is it helpful to exponentiate the coefficients (estimates)? I think I once read something about that, but I cannot remember where. if so, how would be the interpretation of the exp(estimate) ?
exp(beta_i) is the odds ratio for success when the i-th predictor x_i is incremented by 1. In particular if x_i is a 0-1 indicator variable then exp(beta_i) is the odds ratio for comparing the odds of success when x_i = 1 with the odds of success when x_i = 0. E.g. if x_i = 0 for Male and x_i = 1 for Female, and exp(beta_i) = 2, then the odds of success for Females are twice as great as the odds of success for Males. I.e. Females are ``twice as likely'' to succeed as Males, all other things being equal. (Which may or may not be a Good Thing, depending on what ``success'' really means. :-) )
would there be a change of the interpretation of the ANOVA table (or is the ANOVA table not really helpful at all?).
ANOVA tables are ***so*** 20th century!
cheers,
Rolf Turner
######################################################################
Attention:\ This e-mail message is privileged and confid...{{dropped:9}}