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amead
2012 Mar 10
0
Help with confidence intervals for gam model using mgcv
...within 30 days of
admission. Sexf is gender (M or F), Age is age in years at
the start of the admission. The standard glm is a logistic
regression :-
glmDead.AS <- glm(Dead30d~Sexf+Age,
data=HIPE,family=binomial(link="logit"))
The corresponding GAM, with a smooth for age, is :-
gamDead.AS <- gam(Dead30d~Sexf+s(Age),
data=HIPE,family=binomial(link="logit"))
For my work, age is a nuisance. We already know exactly the
effect of age (which has an odd shape). I have no interest
in this parameter, nor in CIs for it. The GAM fits notably
better than the GLM. The substa...