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Re: st: Comparing two data set
From
Nick Cox <[email protected]>
To
[email protected]
Subject
Re: st: Comparing two data set
Date
Mon, 7 Mar 2011 00:08:07 +0000
Sorry, but I don't understand how this differs substantially from your
previous question. You just need to use whatever listing or tabulation
commands you like after -append-ing.
Nick
On Sun, Mar 6, 2011 at 7:44 PM, Dirk Enzmann
<[email protected]> wrote:
> In reply to
>
> http://www.stata.com/statalist/archive/2011-03/msg00337.html
> ---------------------------------------------------------------
>
> Thanks, it shows how you would use -append- to identify cases that are in
> one dataset but not in the other.
>
> However, this did not help much. You did argue against "I need -merge-
> because I want to find out exactly which values of which cases have been
> entered differently (and list the problems using -foreach-). " and you wrote
> "-merge- may be convenient but I don't think it is essential."
>
> I still don't know how to compare the two datasets using -append- instead of
> -merge- to find out exactly which values of which cases have been entered
> differently, such as I did, for example, in the two tables below:
>
> +--------------------------------+
> | patient agegrp_orig agegrp |
> |--------------------------------|
> | 11 1 2 |
> | 44 3 2 |
> | 55 3 2 |
> | 66 1 2 |
> | 77 1 2 |
> | 110 3 2 |
> +--------------------------------+
>
> +--------------------------------------+
> | patient bp_before_orig bp_before |
> |--------------------------------------|
> | 1 143 163 |
> | 2 163 143 |
> | 100 145 143 |
> +--------------------------------------+
>
> How can this be done using -append-?
>
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