Dear STATA users,
I am new to survival analysis using STATA. I am estimating an exponential
survival model of children clustered within mothers. I have both child and
mother weights in the data set. However, when I specify the child weights in
model specification and request for robust standard errors using the mother�s
id as cluster variable, STATA returns an error message that �robust/pweights
not allowed with shared� option.
Would someone tell me why we cannot use weights when estimating a shared
frailty model?
Regards,
Walter Omariba
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