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Support #430

Sample size and weight within blood sample w2

Added by Gaelle Albertus almost 7 years ago. Updated almost 7 years ago.

Status:
Closed
Priority:
High
Category:
Weights
Start date:
10/09/2015
% Done:

100%


Description

Hi,

I am working on Nurse Health Assessment database in order to use data related to biomarkers and health. I decided to use the wave 2 from the survey combined with the main sample (wave 2 - GPS sample).

Therefore, I am contacting you because the user manual gives a number of subjects equals to 10,175 while when I import the database (with STATA), I only have 9,906 individuals for wave 2.
In addition, I took a look at the variable called "b_nuroutc" in the b_indresp file from Nurse Assessment and I obtained 9 957 individuals belonging to "nurse visit conducted - blood sample sent to lab".
How could you explain this difference ?

Next, I tought about using the cross-sectional weight for GPS sample only (b_indnsus_xd) but I am wondering if I could use it even if I don't have the correct number of subjects. Is this weight is still accurate givent that I miss approximately 300 individuals ?

Thank you for helping me.
Kind regards,

Gaelle

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