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Re: st: data structure for case control
From
"Sacamano, Paul L." <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: data structure for case control
Date
Mon, 10 Dec 2012 17:33:07 -0500
That is very helpful. Would it be the same for a study matching cases with controls on age frequency distribution? I currently have two files, one of cases and the other controls. I think I need to create an AGECLASS variable in both and then merge them together matching on AGECLASS. I expect there is a Stata command to then pair them together 1 to 2 within each class.
Thanks again.
Paul
On Dec 10, 2012, at 4:38 PM, Adam Olszewski <[email protected]> wrote:
> Hi Paul,
> The easy way would be to have one row per observation/patient and each
> variable as one column. There would be one column AGE and one column
> CASECONTROL, which you can assign 1 for cases and 0 for controls. This
> way you can do "standard epidemology table" commands such as -cc- or
> survival analysis with single-line commands using your "casecontrol"
> variable as an indicator of the arm.
> Good luck,
> Adam Olszewski
>
>
> On Mon, Dec 10, 2012 at 2:59 PM, Sacamano, Paul L. <[email protected]> wrote:
>> Hi,
>>
>> I am very new to Stata, very much a beginner.
>>
>> I have a case-control study and am not sure how to setup the structure of the data file.
>>
>> Using the variable age as an example, would I have:
>> 1) a variable for CASE_AGE and CONTROL_AGE, or
>> 2) have just one AGE variable, and include a CASE variable and a CONTROL variable?
>>
>> Really appreciate any help you might have.
>>
>>
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