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Re: Applying weights to multilevel hazard analysis using Cox regression [message #23956 is a reply to message #23954]

Thu, 20 January 2022 17:19

Ugonna
Messages: 26
Registered: June 2020

Member

Thanks Bridgette and Tom for the response.

The only difference from my syntax and the one in DHS methodological report #27 is the psu. I understand I can either use v001 or v021 as the psu. Correct me if I'm wrong please.

The svyset command executed and showed this result:

'Note: Stage 1 is sampled with replacement; further stages will be ignored for variance
estimation.

pweight: <none>
VCE: linearized
Single unit: centered
Strata 1: v022
SU 1: v021
FPC 1: <zero>
Weight 1: wt2_1
Strata 2: <one>
SU 2: <observations>
FPC 2: <zero>
Weight 2: wt1_1'

When I run the syntax "svy: stcox i.w_quintile elect i.anc i.v024 v025 poverty_prop sec_edu_prop || v021:" without the shared option it returns this error message:
'variable wt1_1*wt2_1 not found'.

And then when I run it without the svy option 'stcox i.w_quintile elect i.anc i.v024 v025 poverty_prop sec_edu_prop, efron shared(v021)' it executes successfully, even though it takes a long time to do that.

I also observed that I could run this 'svy: melogit inf_death i.w_quintile elect || v021:' successfully, although that is not what I'm using in my analysis.

Could it be that 'svy' is not needed when running a Cox multilevel regression?

I have also posted the question on Stata forum.

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[Message index]

		Applying weights to multilevel hazard analysis using Cox regression By: Ugonna on Wed, 19 January 2022 16:18
		Re: Applying weights to multilevel hazard analysis using Cox regression By: Bridgette-DHS on Thu, 20 January 2022 15:54
		Re: Applying weights to multilevel hazard analysis using Cox regression By: Ugonna on Thu, 20 January 2022 17:19
		Re: Applying weights to multilevel hazard analysis using Cox regression By: Bridgette-DHS on Fri, 21 January 2022 08:05
		Re: Applying weights to multilevel hazard analysis using Cox regression By: Ugonna on Fri, 21 January 2022 15:17
		Re: Applying weights to multilevel hazard analysis using Cox regression By: Bridgette-DHS on Mon, 24 January 2022 08:53
		Re: Applying weights to multilevel hazard analysis using Cox regression By: Ugonna on Mon, 24 January 2022 14:42

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