Run the program with and without using this option previously
to see whether it makes any difference.
On my understanding, "valid" is not necessarily the
best word here. -str2ph- is just a way of putting
a number on agreement between observed and predicted,
using a likelihood approach. That can be useful,
but it is not totemic.
Nick
[email protected]
Jane Skinner
> I have a question about Patrick Royston's str2ph command to
> calculate explained variation in survival analysis, which I am using
> with stcox.
>
> Are the results of str2ph still valid if the "cluster" option is
> used to adjust standard errors for intragroup correlation?
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