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Support #387

Weights when nurse visit is baseline

Added by Amanda Hughes almost 9 years ago. Updated over 8 years ago.

Status:
Closed
Priority:
High
Assignee:
-
Category:
Weights
Start date:
06/25/2015
% Done:

100%


Description

I’m doing an analysis in which variables measured in the W2/W3 nurse visit (baseline) are used to predict outcomes one year later (so W3/W4 for the UKHLS and BHPS sub-samples respectively). I therefore want to restrict analysis to people present at both the nurse visit and one year later, but am not concerned with how long they were in the study prior to the nurse visit for either sample component. Rather, I want to keep everyone in present at the nurse visit and the following wave.
So, in this case, which weights should I use? Should I start with the cross-sectional nurse visit weight for the whole sample and combine this somehow with appropriate weights (not sure which this would be) from W3/W4 depending on the sample component? I notice that at both W3 and W4 there is a ‘combined longitudinal nurse interview weight’, c_indnsub_lw and d_indnsub_lw, but for the analysis I want to do presumably the first of these would only be relevant for the UKHLS component, and the second of these only relevant for the BHPS component – is it possible to use one or the other for the different sample components? Or is there somewhere a longitudinal weight for +1 waves from the nurse visit which applies to both the UKHLS and BHPS components?
Thanks,
Amanda

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