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RE: st: SE and CI by mrtab
From
Nick Cox <[email protected]>
To
"'[email protected]'" <[email protected]>
Subject
RE: st: SE and CI by mrtab
Date
Mon, 14 May 2012 12:35:53 +0100
I don't really have further comments. I was half-assuming that you know exactly what you seek, but if so you are not spelling it out.
As I see it, you would need to specify what data generation process you expect to apply and e.g. how confidence intervals are to be defined and calculated.
For example, if the question is mode of transport to work and the answers look like
Car
Car, train, walk
Walk
Yak
Horse
Camel
Personal helicopter
...
it is not clear to me what meaning there could be to a standard error around the percent of people who say "walk". If the principle is that people can specify a variety of answers, the associated data generation process seems elusive to me. You can always count "mentions" rather than "people" but the inference for that I don't think is obvious.
So, I don't think you can blame Stata for neglecting this area unless you can point to literature in which the logic is explained.
Nick
[email protected]
Abu Camara
Hi Nick,
Thanks for the reply.
I have no idea of writing my own program for "mrtab" to compute "se" &
"ci". Further help/suggestion would be appreciated.
Official Stata appears to be weak in complex tabulation.
Abu.
On 14 May 2012 12:18, Nick Cox <[email protected]> wrote:
> SJ-5-1 st0082 . . . . . . . . . . . . . . . Tabulation of multiple responses
> (help _mrsvmat, mrgraph, mrtab if installed) . . . . . . . . B. Jann
> Q1/05 SJ 5(1):92--122
> introduces new commands for the computation of one- and
> two-way tables of multiple responses
>
> You are correct, I think. -mrtab- doesn't provide these, so you may
> need to write your own program.
>
> Nick
>
> On Mon, May 14, 2012 at 10:09 AM, Abu Camara <[email protected]> wrote:
>
>> I am running one and two way tables of multiple response using the
>> user-written command "mrtab" (Stata 11.2). I tried to generate both
>> standard errors and
>> confidence intervals for tables of percentages but I could not find
>> this as an option.
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