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Published byBarbara Dąbrowska Modified over 6 years ago
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Web Panels at National Statistical Institutes?
Jörgen Svensson Process Owner
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What is a web panel? Access panel with surveys through Internet
Access panel: a sampling database of potential respondents who are willing to participate in future surveys if they are selected Web panel survey ≠ web questionnaire survey
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Are web panels representative?
Vague term - Miniature? - Same structure on background variables? - Benchmarking? Sampling bias
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Response rate? Telephone omnibus survey ↓ 50% Respondents ↓ 20% Opt-in
↓ 50% Respondents ↓ 20% Opt-in ↓ Sample from panel ↓ 40% % ‘response rate’
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Estimation Unweighted estimation Propensity score adjustment
Recommendation from Scientific Council For explorative research? Estimations of change?
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Standards and quality ISO 26362 Access panels ESOMAR AAPOR
Web panel committee of Swedish Survey Society
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A Swedish dilemma Cross-border trade statistics Using web panels?
‘Blended sampling’ Inexpensive!
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Conclusions (1) Probability samples are ‘representative’ and transparent Exceptions when very strong reasons Response set is not a probability sample Conduct web panel pilot studies?
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Conclusions (2) Better use reports from experts? No statistics?
Statistics Sweden gives no guarantee Recommendation from Scientific Council
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