Thanks everyone for your help!
All sorted!
Sinéad O Neill
PhD Scholar
NPEC, ANU Research Centre
Dept of Obstetrics & Gynaecology
5th Floor CUMH
Wilton, Cork.
(+353-21-492-0656)
(+353-86-3586895)
On 18 Sep 2013, at 12:46, Sinead O Neill <[log in to unmask]> wrote:
> Hi.
>
> I want to make one variable called 'Gross Income'.
>
> I currently have a variable for gross income for each year,
> e.g. Gross_Income1980,
> Gross_Income1981,
> Gross_Income1982,
> etc. right up to Gross_Income2010.
>
> I want to make one variable for 'Gross Income' which is equal to a woman's gross_income in the year before she gave birth.
>
> For example, if I have a woman who gives birth in 1982 (variable name Birth_1982), I want to use the gross_income variable from 1981 (Gross_Income1981)
>
> How do I make a single variable for 'Gross Income' which is equal to a woman's gross income the year before she gave birth?
> This is for a Cox regression analyses.
>
> Thanking you!!
>
> Sinead
>
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