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Re: st: Paired t-test for propensity match cohort
From
Sripal Kumar <[email protected]>
To
[email protected]
Subject
Re: st: Paired t-test for propensity match cohort
Date
Sun, 17 Jul 2011 12:53:52 -0400
Thanks Lars. I dont think this helps. In essence, what I need is the
mean age (and the test for significance) in the matching_Variable 0
when compared with the mean age in matching_Variable 1, stratified by
matched pairs (Pairs). The below example is after propensity score
matching with pairs 1, 1 forming a pair and so forth. The simple
solution would be to create age_0 (age for the matching_Variable 0 for
pair 1) and age_1 (age for the matching_Variable 1 for pair 1), so
that the row for pair 1 would have 2 columns for age. However, my
dataset has around 10,000 cases and the above is not easy to do. Any
thoughts? I hope I have made myself clear.
Pairs matching_Variable Age
1 0 53
1 1 54
2 0 55
2 1 52
3 0 55
3 1 52
4 0 53
4 1 54
5 0 55
5 1 52
On Sun, Jul 17, 2011 at 12:06 PM, Lars Folkestad
<[email protected]> wrote:
> If you sort group and age and use the stable option you can reshape your data using the reshape wide option
> The stable option is critical.
> Tjeck you data one million times when you have reshaped your data, so that pair 1 is a line. (there is a funktion in Stata that can do the checking for you, but cannot remember the name of it.)
>
> Then do ttest varex1 == varex2
>
> Hope it helps, and that i havent misunderstood your problem.
>
> Mvh
> Lars Folkestad
>
>
> Den 17/07/2011 kl. 17.26 skrev "Sripal Kumar" <[email protected]>:
>
>> Dear all,
>>
>> There should be a simple solution to the problem below but I cant seem
>> to wrap my head around it. I have a propensity matched cohort that is
>> arranged as
>>
>> Pairs matching_Variable Age
>> 1 0 53
>> 1 1 54
>> 2 0 55
>> 2 1 52
>> 3 0 55
>> 3 1 52
>> 4 0 53
>> 4 1 54
>> 5 0 55
>> 5 1 52
>>
>> How can I do a paired sample t-test for age without having to create
>> two other variables age_0 and age_1.
>> thanks in advance.
>> Sripal.
>>
>> *
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>
> *
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>
*
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