Support #401
closed
Weights and finding variables
Added by Tracy Turc-Milloy over 9 years ago.
Updated over 9 years ago.
Description
Hello,
My Masters project is looking at the possible association between commuting times and CRP levels. I have a few points that are not clear for me from the user guides. Firstly, I wish to do a cross-sectional analysis of Wave 2 data only e.g. main interview, nurse visit and blood sample data. However the cross sectional weight provided in the guide is for a combination of Wave 2 and Wave 3. Could you provide me with the weight for Wave 2 only?
My 2nd main area of confusion was that in the main interview questions for wave 2 there doesn't seem to be a clear way of distinguishing if someone takes anti-inflammatories, statins (not if they are new to taking statins, but if they are currently taking statins, prescribed or not) or contraceptive/hrt drugs, however this is important for crp. Is there any way to access this information without having a special licence?
Thank you,
Tracy
Tracy
- Category set to Weights
- Target version set to X Ns
- % Done changed from 0 to 50
- Assignee set to Tracy Turc-Milloy
To clarify: W2 are exclusively UKHLS GPS sample members and W3 exclusively BHPS sample members. All have only taken part in the health assessment once to date.
Jakob
Hello,
Please could you tell me if the committee has determined yet a weighting that could apply to W2 members who had a blood sample taken?
Thank you,
Tracy
Tracy Turc-Milloy wrote:
Hello,
Please could you tell me if the committee has determined yet a weighting that could apply to W2 members who had a blood sample taken?
Thank you,
Tracy
I apologize, I have not stated the urgency of my request. I am currently in the middle of a week's leave from work to work on my Masters project - the first draft of which must be submitted in 2 weeks. I am unable to do the linear regression with the current weighting svyset b_psu [pweight=indbdub_xw], strata(b_strata)as I get missing values for F and P values. Please help me with a correct weighting,
Regards,
Tracy
Tracy,
I suggest that you use the weight b_indinus_xw for your analysis. It is not quite optimal as it does not correct for the final stage of non-response (to the nurse visit, conditional on completing the main individual interview), but it should be good enough.
(And apologies for the slow reply; I was away last week.)
Best wishes,
Peter
- Status changed from New to Closed
- % Done changed from 50 to 100
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