Thomas Lumley wrote:
[...]
If you can persuade the people measuring the values to give you the
numbers (assuming they are just below `limit of detection' rather
than genuine non-detects) you will reduce the need for imputation.
This is often the most powerful technique -- analytical chemists
-Original Message-
From: Jonathan Williams
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Sent: 15 March 2004 12:48
To: Ethz. Ch
Subject: [R] imputation of sub-threshold values
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On Mon, 15 Mar 2004, Jonathan Williams wrote:
Is there a good way in R to impute values which exist,
but are less than the detection level for an assay?
If there were a good way to do it, it would probably be implementable or
implemented in R.
If you can persuade the people measuring the
Thomas Lumley [EMAIL PROTECTED] writes:
On Mon, 15 Mar 2004, Jonathan Williams wrote:
Is there a good way in R to impute values which exist,
but are less than the detection level for an assay?
If there were a good way to do it, it would probably be implementable or
implemented in R.
If
