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Support #323

which weight to use

Added by Veronique Siegler almost 6 years ago. Updated almost 5 years ago.

Status:
Closed
Priority:
Urgent
Assignee:
Category:
Weights
Target version:
Start date:
11/14/2014
Due date:
% Done:

100%

Estimated time:

Description

I am currently working on a publication with a very tight schedule using data from the Understanding Society. The publication will use different measures at an individual level, sometimes extracted from the questionnaire, sometimes from the self-completed questionnaire. Despite reading the Understanding Society literature, I am still unsure on which weight to use in which situation and would be grateful if you could clarify the following:

- lets say I would like to know the proportion of people who feel they belong to their local area (wave 3, adult self-completed questionnaire). After reading the user guide, my understanding is that I should use the following weight: c_indscub_xw (for combined cross-sectional adult self-completion weight) . However, a colleague is advising me to use the following weight: c_indinub_xw (for combined cross-sectional adult main interview weight).

- lets say I would like to know the proportion of people who are male and female (wave 3, adult questionnaire) . After the user guide, my understanding is that I should the following weight: c_indinub_xw (for combined cross-sectional adult main interview weight).

- lets now say I would like to know the proportion of people who feel they belong to their local area by age (one variable from the adult self-completed questionnaire and one variable from the questionnaire, both wave 3). The user guide suggests that "for individual level analysis you may want to combine information from different questionnaire sources. In this situation please select the weight suitable for the lowest level according to the hierarchy below" - which suggests to me that in that case, I should use the following weight: c_indscub_xw (for combined cross-sectional adult self-completion weight). However, again my colleague is suggesting that I should use the following weight: c_indinub_xw (for combined cross-sectional adult main interview weight).

I expect the same logic would apply to other previous waves? (waves 2, 1 and BHPS) and future wave (wave 4)

I would be so grateful if you could advise me regarding that important matter.

History

#1 Updated by Veronique Siegler almost 6 years ago

I would be very grateful if you could let me know if you have the resources and time to deal with my query within the next couple of weeks. I work in the ONS towards a publication on a very tight schedule: to be released in January, with several of the Understanding Society data. Many thanks. Veronique

#2 Updated by Veronique Siegler almost 6 years ago

My colleague is also saying that if I decide to look at changes (not to do a longirudinal analysis) (for example, looking at the proportion of people who feel they belong to their local area and looking at the proportion of people who feel they belong to their local area by age and comparing the results for wave 3 and wave 4), I always need to use the combined cross-sectional adult main interview weight, and not the self-completion weight)?

#3 Updated by Redmine Admin almost 6 years ago

Your request is being looked at and we hope to have a reply for you by middle of next week.
Jakob

#4 Updated by Alita Nandi almost 6 years ago

  • % Done changed from 0 to 90

First let me apologise for the delay in responding.

Answer to your first post
Your understanding is correct.
- If you are using questions from the adult self-completion in a specific wave then use the self-completion cross-section weights for that wave.
- If you are using questions from the adult face-to-face interview in a specific wave then use the respondent cross-section weights for that wave.
- If you are using questions from the adult face-to-face interview AND from the adult self-completion in a specific wave then use the self-completion cross-section weights for that wave.

- If you want to know the proportion of men and women in the population then use the w_sex variable in the w_indall file and the enumeration cross-section weights for that wave.

Note that weights where the last two letter before _xw is “ub” means that you should use these with the entire sample: GPS, EMB and BHPS

Answer to your second post
Whether you want to look at within person changes or compare responses across two waves is a substantive issue. E.g., if you find using the second method that the proportion of people who feel they belong to the neighbourhood is the same in wave 3 and 4, you will not be able to say if this is because (1) it has not changed for people living in those areas or (2) it has increased for some but decreased for (an equal number of) other people.

If you are simply comparing proportions across two waves (second method), then using self-completion cross-section weights (for the respective waves) will be fine.

On behalf of the team, Alita

#5 Updated by Alita Nandi almost 6 years ago

  • Status changed from New to In Progress

#6 Updated by Redmine Admin almost 6 years ago

  • Status changed from In Progress to Closed
  • % Done changed from 90 to 100

#7 Updated by Gundi Knies almost 5 years ago

  • Assignee set to Alita Nandi
  • Target version set to M3

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