1. Web Panels at National Statistical Institutes?
Jörgen Svensson
Process Owner

2. 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

3. Are web panels representative?
Vague term
- Miniature?
- Same structure on background variables?
- Benchmarking?
Sampling bias

4. Response rate? Telephone omnibus survey ↓ 50% Respondents ↓ 20% Opt-in
↓ 50%
Respondents
↓ 20%
Opt-in ↓
Sample from panel
↓ 40% % ‘response rate’

5. Estimation Unweighted estimation Propensity score adjustment
Recommendation from Scientific Council
For explorative research?
Estimations of change?

6. Standards and quality ISO 26362 Access panels ESOMAR AAPOR
Web panel committee of Swedish Survey Society

7. A Swedish dilemma Cross-border trade statistics Using web panels?
‘Blended sampling’
Inexpensive!

8. 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?

9. Conclusions (2) Better use reports from experts? No statistics?
Statistics Sweden gives no guarantee
Recommendation from Scientific Council