Graphs using svy:

[James Clarke]

Dear all,

I am trying to run an lfit graph with confidence intervals using two variables, let's call them var1 and var2.

However since I am using weighted survey data I am understand I must use the svy: command before any written code to ensure the sample weightings are correct.

The code I initially predicted to be correct is below, however this gives an error message as shown.

. svy: twoway (lfitci var1 var2)
twoway is not supported by svy with vce(linearized); see help svy estimation for a list of Stata estimation commands that are
supported by svy

Please could someone suggest how I could go about producing such a graph?

I am using Stata 15.1 for Windows 10.

Many thanks in advance,
James Clarke.

[Lance Erickson]

James,

You'll need to actually estimate the model using the svy prefix and then plot predictions. Here's an example:

use http://www.stata-press.com/data/r13/nhanes2f
svyset psuid [pweight=finalwgt], strata(stratid)

svy: regress zinc age
margins, at(age=(20(5)75))
marginsplot, recastci(rarea)

Lance

[James Clarke]

Dear Lance,

This has worked perfectly, exactly what I was trying to do.

Thank you so much for the help!

James Clarke.