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Feb 4 at 14:42 comment added pawpaw Sorry, I forgot to tag your name above @AlexJ
Feb 2 at 21:24 comment added pawpaw Yes, I am trying to see if the coefficients on the interaction of time and other variables change and are significant. And because I have repeated observations I would like to control for time-invariant heterogeneity across individuals en.wikipedia.org/wiki/Fixed_effects_model
Feb 2 at 21:16 history edited pawpaw CC BY-SA 4.0
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Feb 2 at 21:13 comment added pawpaw The reason I put ids = ~secu because I saw it done this way for this survey data in an example here: github.com/bwlewis/usgsd/blob/master/…. Which is probably not the best reason, but I had to start somewhere.
Feb 2 at 3:53 comment added Alex J and specifically, what does I would like to control for individual-level heterogeneity mean?
Feb 1 at 22:40 comment added Alex J And you trying to test if the interaction of time and female, college etc. changes?
Feb 1 at 22:39 comment added Alex J What's secu? The most important thing for getting correct results for is passing the survey design into the svydesign object. I would expect ids = ~ PSU + SSU or something like that
Feb 1 at 20:01 comment added pawpaw In my data primary sampling units are “metropolitan statistical areas, counties or groups of counties”. Secondary sampling units are census blocks or groups of census blocks.
Feb 1 at 20:00 comment added pawpaw Hi @AlexJ, yes some individuals are observed in both time periods and some only in one (no interview or they are outside of the age range I am interested in).
Feb 1 at 1:51 comment added Alex J Re secondary sampling unit (SSU) - in survey sampling, the primary sampling unit (PSU) is the first level of clustering, and the secondary sampling unit is the level below that. For example, the PSU could be a household and the SSU a person. We expect that within a cluster, there is some correlation in responses, which is what defining ids in the survey design object accounts for when calculating standard errors etc.
Feb 1 at 1:49 comment added Alex J In "I would like to control for individual-level heterogeneity," - does this mean you have multiple responses per individual?
Feb 1 at 1:28 comment added pawpaw @AlexJ would you mind clarifying - "Can the indivual by considering a secondary sampling unit?"
Feb 1 at 1:26 comment added pawpaw Hi @AlexJ, thank you for your reply. I have added more information about my variables to my question.
Feb 1 at 1:23 history edited pawpaw CC BY-SA 4.0
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Jan 30 at 23:15 comment added Alex J Can the indivual by considering a secondary sampling unit? Then, they could be accounted for by svdesign(ids = ~ secu + individual_id)
Jan 30 at 23:14 comment added Alex J Hi @pawpaw, welcome to CV. Can you provide some more information about what your variables mean, in the body of your question?
Jan 28 at 14:55 history edited kjetil b halvorsen CC BY-SA 4.0
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S Jan 28 at 14:46 review First questions
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S Jan 28 at 14:46 history asked pawpaw CC BY-SA 4.0