Displaying 1 result from an estimated 1 matches for "ghs_70_full".
2012 Nov 02
0
stepAIC and AIC question
...about stepAIC and extractAIC and why they can
produce different answers.
Here's a stepAIC result (slightly edited - I removed the warning
about noninteger #successes):
stepAIC(glm(formula = (Morbid_70_79/Present_70_79) ~ 1 + Cohort +
Cohort2, family = binomial, data = ghs_70_79, subset =
ghs_70_full),direction = c("backward"))
Start: AIC=3151.41
(Morbid_70_79/Present_70_79) ~ 1 + Cohort + Cohort2
Df Deviance AIC
<none> 1797.6 3151.4
- Cohort 1 1826.2 3178.0
- Cohort2 1 1826.3 3178.2
Call: glm(formula = (Morbid_70_79/Present_70_79) ~ 1 + Cohort...