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Support #2233

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Blood Biomarker Survey Weights

Added by Rosie Mathers 15 days ago. Updated 11 days ago.

Status:
Feedback
Priority:
High
Assignee:
Understanding Society User Support Team
Category:
Weights
Start date:
04/03/2025
% Done:

80%

Description

Hi there,

I am using the blood biomarker survey weights in my analysis for Wave_2: indbdub_xw. However, when I load this variable into RStudio I get two options: indbdub_xw.x and indbdub_xw.y.

When I run code to check if the two variables are equal, they are not:

all.equal(Wave_2$indbdub_xw.x, Wave_2$indbdub_xw.y)

[1] "Mean relative difference: 9.993738e-08"

I'm also unable to find examples within the USoc literature on survey weight guidance where w_xxxyyzz_aa has a decimal point and .x or .y at the end.

Please can you tell me what the difference between these two weight options is?

Thanks in advance!

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 #1

Updated by Rosie Mathers 15 days ago

Hi,

I think the issue might be a coding problem from uploading the indbdub_xw variable twice.

Let me know if you agree :)

Thanks,

Rosie

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 #2

Updated by Understanding Society User Support Team 11 days ago

  • Status changed from New to Feedback
  • Assignee changed from Olena Kaminska to Understanding Society User Support Team
  • % Done changed from 0 to 80
  • Private changed from Yes to No

Hello Rosie,

Which version are you using? I have checked the latest released version and that just has the variable "indbdub_xw" in the datafile "xlabblood_ns.dta" (Stata version). I cannot see the variables you have mentioned. So, as you have said in your second post, this is most likely a problem from reading in the data into R incorrectly.

If you want to know about how to our data using R including reading in the data from a Stata file, please enroll in this Moodle course: https://www.understandingsociety.ac.uk/help/training/introduction-to-understanding-society-self-paced-moodle/

Best wishes,
(Alita) Understanding Society User Support Team

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