st: replicate weights using svr commands in Stata8

[Susan Donath <donaths@cryptic.rch.unimelb.edu.au>]

Dear Statalisters

I have a query about the svr programs.
I am using a dataset containing unit record data from the Australian Bureau 
of Statistics (ABS). The ABS provides a set of 30 replicate weights for 
each case in the dataset. According to their documentation, the estimated 
standard error of an estimate can be found using the  following formula :

SE(y) = sqrt( 29/30 S ( y(g) - y )*( y(g) - y ) )

where y(g) is the gth estimate of the parameter y using the gth set of 
replicate weights
and y is the estimate of the parameter using the full person weight

The supplied dataset includes a person weight for each case, but no 
information on strata or psu.

I assume that I can use the svr programs to calculate standard errors but I 
can't quite figure out the exact syntax of the command. I assume that I 
need to use the brr version of svrset, but this requires me to enter a 
number of degrees of freedom, and I don't understand what this refers to.

Can anyone help?


Thanks
Susan Donath

(I've tried emailing Nick Winter, the author of svr, but the emails keep 
bouncing)





Susan Donath

Senior Research Fellow
Clinical Epidemiology and Biostatistics Unit
Murdoch Children's Research Institute & University of Melbourne Department 
of Paediatrics
Royal Children's Hospital
Parkville,  Vic. 3052.  AUSTRALIA

E-mail: donaths@cryptic.rch.unimelb.edu.au
Tel. 9345 4742   Fax 9345 6000
All numbers area code 03 or international prefix +6

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