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Re: st: Save the percentage of each response category into new variables
From
Bryan Sayer <[email protected]>
To
[email protected]
Subject
Re: st: Save the percentage of each response category into new variables
Date
Fri, 09 Sep 2011 17:12:51 -0400
Just to clarify, this is what I meant by actual percentages: the use of
some form of a table command, rather than a mean of a 0/1 variable.
That is, the software has to know how to distinguish categorical from
continuous. Some software may still call this a proportion.
Multiplying by 100 is inconsequential to the issue.
Bryan Sayer
Monday to Friday, 8:30 to 5:00
Phone: (614) 442-7369
FAX: (614) 442-7329
[email protected]
On 9/9/2011 5:03 PM, Steven Samuels wrote:
-svy tab-, with a "ci" option uses the logit transform by default and
for proportions, not for percentages. It can be used for ordinary,
non-survey, data by preceding the -svy tab- command with
svyset _n
Steve
On Sep 9, 2011, at 3:42 PM, Bryan Sayer wrote:
While it is true that the mean of a 0/1 variable is equal to the
proportion, the confidence interval obtained this way may go below
zero or above one, which is generally an undesirable characteristic.
Some software will use a logit transformation to prevent this, but
only when doing confidence intervals of actual percentages.
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