Questions tagged [chunk-test]
The chunk-test tag has no usage guidance.
4
questions
3
votes
2
answers
2k
views
If I have one non-significant factor level in a glm, is that entire variable now considered non significant?
I have a question similar to this one, but I just wanted to follow on and ask if the entire variable is now insignificant? I have a factor with 3 levels. When doing the model simplification, it showed ...
- 31
2
votes
1
answer
221
views
how can I obtain a beta value for three way interaction term in a logistic regression
I am using the RMS package in R to conduct a logistic regression that contains a three-way interaction. As part of my modelling approach, I have conducted chunk tests of the interaction (using Wald ...
- 401
1
vote
2
answers
3k
views
P-values for spline terms in coxph in R
I have a Cox PH model including a smoothing spline as follows, where x and z are covariates:
fit<-coxph(Surv(start,end,exit) ~ x + pspline(z))
While I ...
- 21
20
votes
2
answers
9k
views
What are chunk tests?
In answer to a question on model selection in the presence of multicollinearity, Frank Harrell suggested:
Put all variables in the model but do not test for the effect of one
variable adjusted for ...
- 4,957