st: str2ph and cluster

[Jane Skinner <Jane.Skinner@uea.ac.uk>]

Hi everybody

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?

Many thanks,

Jane

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