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Internet data collection in the LFS Danish experiences. Paris, April 2010. Outline. Background Preparations The pilot Going full-scale Quality? Further work. Background 1. The Danish LFS has individuals as sampling unit

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Presentation Transcript
outline
Outline
  • Background
  • Preparations
  • The pilot
  • Going full-scale
  • Quality?
  • Further work
background 1
Background 1
  • The Danish LFS has individuals as sampling unit
  • Until 2010 household variables collected via proxy in final interview
  • From Q1 2010 Denmark collects household variables as required by regulation no. 577/98
background 2
Background 2
  • Grant given from Eurostat in 2008
  • Initial work on differences between CATI- and CAWI-interviews
preparations
Preparations
  • Discussions on collection modes:
    • How much CATI?
    • How many reminders?
    • Letter vs. phone reminders?
  • Two parallel universes
the pilot
The Pilot
  • Two reference weeks as sample
  • Two weeks interview period
  • Two groups: Aldi vs. Irma
    • Aldi: baseline with no reminders
    • Irma: Two phone reminders and optional CATI
pilot the results
Pilot – the results
  • What was learned:
    • Reminder needed
    • 2nd reminder not necessary
    • CATI option needed
  • Showed that a pilot was essential
going full scale
Going full-scale
  • Not a big problem
  • Not possible to keep as separate universes – today one big survey.
quality
Quality
  • Accepted a possibly lower quality.
  • Primary issues: NACE, ISCO
  • Further study needed
  • Setup test vs. quality test
further work
Further work
  • In-depth quality analysis
  • Coding of NACE and ISCO
  • Analysing the mode effects of CAWI in core-LFS
thank you

Thank you!

Paris, February 2010

Sammy Lauritsen [email protected]

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