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st: why no pw option with collapse (sd)?

From   Christine Valente <>
Subject   st: why no pw option with collapse (sd)?
Date   Mon, 19 Nov 2007 16:47:11 +0000

Dear Statalist members,

the "collapse" command does not allow specifying pweights with collapse (sd). I am not sure I understand why, however. Can anyone help?

best regards,

Christine Valente

Research assistant,
The Centre for Market and Public Organisation

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