Dear R experts,
Here is my problem :
R startup FAILS with an error message. The error message is more
meaningful when I do invoke R via sudo OR as root. I attach the
startup messages when I invoke R as :
1. as non root user
2. with sudo
3. as Root user.
The error messages ( mentioned in snippet
On 4/5/21 8:28 PM, Sorkin, John wrote:
I would like to define contrasts on the output of a coxph function. It appears
that the contrast function from the contrast library does not have a method
defined that will allow computation of contrasts on a coxph object.
How does one define and evalua
Dear John,
It's not clear to me exactly what you have in mind, but
car::linearHypothesis(), multcomp::glht(), and the emmeans package work
with Cox models. I expect there are functions in other packages that
will work too.
Here's an example, surely simpler than what you have in mind, but you
Dear John,
I googled "contrasts Cox regression" and found
https://stats.stackexchange.com/questions/15603/performing-contrasts-among-treatment-levels-in-survival-analysis
where Frank Harrell reports how to do what you want with his rms
package. At least I think so, haven't tried it myself.
B
On Wed 24 Mar 2021 at 07:54, hannelore nelissen <
hannelore.nelis...@outlook.be> wrote:
> Dear all,
> I am having some issues with using the IV strategy for an endogeneity
> problem in terms of a probit model. In particular, I want to follow a
> two-stage procedure where I estimate a probit on th
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