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Re: Comparing variables across different years [message #4146 is a reply to message #4145]

Tue, 07 April 2015 19:27

Reduced-For(u)m
Messages: 292
Registered: March 2013

Senior Member

You can add covariates to the model in exactly the same manner. Just instead of running a least-squares regression you run a logit:

local X "list variables here"

svy: logit Y `X' i.year, noconstant

Something like that. Or, if you wanted to compare changes in the X's over time, you could interact the variable with the survey year dummies, and run tests of statistical significance on the coefficient from the interaction term.

For your PSUs, just generate a new PSU variable that is PSU*10000+SurveyYear, and in your svyset command, set your cluster to that new PSU variable.

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[Message index]

		Comparing variables across different years By: UAB_user on Tue, 07 April 2015 16:18
		Re: Comparing variables across different years By: Reduced-For(u)m on Tue, 07 April 2015 18:38
		Re: Comparing variables across different years By: UAB_user on Tue, 07 April 2015 19:20
		Re: Comparing variables across different years By: Reduced-For(u)m on Tue, 07 April 2015 19:27
		Re: Comparing variables across different years By: UAB_user on Tue, 07 April 2015 23:39
		Re: Comparing variables across different years By: SAK_Nepal on Wed, 23 May 2018 04:54
		Re: Comparing variables across different years By: Liz-DHS on Mon, 02 July 2018 11:51

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