[R] Weights in survReg

From: Alexander Antonyuk <alexander.antonyuk_at_wolfson.oxford.ac.uk>
Date: Wed 19 Oct 2005 - 22:00:18 EST


Dear R users,

I am trying to find out what the function survReg does exactly with the Weights parameters. I looked in Terry Therneau documentations and other places and couldn't find anything. I tried to make an analogy with weighted OLS and assumed that the scale parameter Sigma in the accelerated failure-time model log(Time)= X*betas +Sigma*E, is of the form Sigma(i) = Sigma/Weights(i).

Can anyone confirm that or point me in the direction where I can find out for sure?

Thank you,
Sasha



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