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![Page 1: Adding a Mode as a Final Step in the Follow-up of a Panel Survey Seminar on New Frontiers for Statistical Data Collection Geneva, Switzerland, 31 October.](https://reader030.fdocuments.in/reader030/viewer/2022032707/56649e4c5503460f94b40aa8/html5/thumbnails/1.jpg)
Adding a Mode as a Final Step in the Follow-up of a
Panel Survey
Seminar on New Frontiers for Statistical Data Collection Geneva, Switzerland, 31 October – 2 November 2012
Birgitta Göransson, Statistics SwedenAnton Johansson, Statistics Sweden
![Page 2: Adding a Mode as a Final Step in the Follow-up of a Panel Survey Seminar on New Frontiers for Statistical Data Collection Geneva, Switzerland, 31 October.](https://reader030.fdocuments.in/reader030/viewer/2022032707/56649e4c5503460f94b40aa8/html5/thumbnails/2.jpg)
About the Survey• Level of Living Survey (LNU)• The survey is commisioned by Stockholm
University since 1968• Panel survey • 10 years between each wave
• Statistics Sweden has been involved in data collection in all waves
• The most recent wave of the survey began in 2010 and was finished in 2011
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About the Interview• Face-to-face • Telephone as an option• Interview length approximately 60 minutes• Household survey • Data collection from several members of the
respondent´s household• Main respondent• Husband/wife/partner• Children between 10-18 years old
• Here we focus on the interview with the main respondent
![Page 4: Adding a Mode as a Final Step in the Follow-up of a Panel Survey Seminar on New Frontiers for Statistical Data Collection Geneva, Switzerland, 31 October.](https://reader030.fdocuments.in/reader030/viewer/2022032707/56649e4c5503460f94b40aa8/html5/thumbnails/4.jpg)
Population and Sample
• Target population: Residents in Sweden, 18-74 years old
• Sample size: 8889 persons
SampleNumber of
elements
Panel 5 555
New Sample Units: interviewed as a child in LNU 2000 1 485
New Sample Units: Young adults (18-28 years) 1 381
New Sample Units: Immigrants 468
Total 8889
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Response Rates in LNU 1968-2010
90 % 85% 82% 79% 76%
61%
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About the Data Collection• Response rate 2010 was very low compared to the
response rate in year 2000
• But still, to reach this response rate (61 %) we had put much effort in the data collection:• For example:• Follow-ups of refusals
(in some cases more than two times)• Using experienced interviewers in the follow-up of
refusals• Tracing phone numbers and new adresses of
noncontacts
• Could anything more be done to increase the response rate?
![Page 7: Adding a Mode as a Final Step in the Follow-up of a Panel Survey Seminar on New Frontiers for Statistical Data Collection Geneva, Switzerland, 31 October.](https://reader030.fdocuments.in/reader030/viewer/2022032707/56649e4c5503460f94b40aa8/html5/thumbnails/7.jpg)
Was it possible to do a third follow-up?• Respondent burden – ”I’ve told you NO two times
before – why can´t you understand what I’m saying?”
• Interviewer burden – could we really assign this task to the interviewers?
• We thought that the only option at this stage was to offer the nonrespondents a very short interview
• Therefore, the interview was shortened by Stockholm University to approximately 5 minutes
![Page 8: Adding a Mode as a Final Step in the Follow-up of a Panel Survey Seminar on New Frontiers for Statistical Data Collection Geneva, Switzerland, 31 October.](https://reader030.fdocuments.in/reader030/viewer/2022032707/56649e4c5503460f94b40aa8/html5/thumbnails/8.jpg)
The Additional Mode• A short interview would most certainly have a
positive effect on the response rate
• But, couldn´t we also give the respondents the possibility to answer the questions in an optional mode?
• We wanted to try this approach.
• Therefore, in the final follow-up, we added a paper questionnaire with the same questions as in the short telephone interview
![Page 9: Adding a Mode as a Final Step in the Follow-up of a Panel Survey Seminar on New Frontiers for Statistical Data Collection Geneva, Switzerland, 31 October.](https://reader030.fdocuments.in/reader030/viewer/2022032707/56649e4c5503460f94b40aa8/html5/thumbnails/9.jpg)
Refusals and Noncontacts
n %
Respondents 5334 61,3
- Face-to-face 3953 45,4
- Telephone 1381 15,9
Nonrespondents 3371 38,7
- Not able to participate 204 2,3
- Noncontacts 908 10,4
- Refusals 2259 26,0
Ineligible Units 184
Sample 8889 Refusals were given the option to
answer the questions in a telephone interview or as a paper
questionnaire
Noncontacts were only given the option to answer the paper
questionnaire
![Page 10: Adding a Mode as a Final Step in the Follow-up of a Panel Survey Seminar on New Frontiers for Statistical Data Collection Geneva, Switzerland, 31 October.](https://reader030.fdocuments.in/reader030/viewer/2022032707/56649e4c5503460f94b40aa8/html5/thumbnails/10.jpg)
Results of the Final Follow-up
90 %
72%
85% 82% 79% 76%
61%
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Results of the Final Follow-up
• About half of the additional responses were paper questionnaires
• Response rate before follow-up 61,3 %
• Short telephone interviews (earlier refusals) 5,2 % • Paper questionnaires (earlier refusals) 4,0 %• Paper questionnaires (earlier noncontacts) 1,3 %
• Response rate after follow-up 71,9 %
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Further work is needed
• The main concern with the follow-up was to increase the response rate
• No evaluation of mode effects with a paper questionnaire
• No evaluation if bias changed in the final follow-up
• It would be interesting to study this further!
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Response Rate in the Different Sample Groups (n=8889)
Before (%) After (%) Difference
Panel 63,1 73,9 10,8
New sample units: interviewed as a child in LNU2000
64,2 73,9 9,7
New sample units: Young Adults
55,2 67,0 11,8
New sample units: Immigrants
47,0 56,2 9,2
Total 61,3 71,9 10,6
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Response Rate (by Gender)Response
rate before follow-up
Additional responses in the follow-up
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Additional Responses (by Mode and Gender)
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Response Rate (by Age)
![Page 17: Adding a Mode as a Final Step in the Follow-up of a Panel Survey Seminar on New Frontiers for Statistical Data Collection Geneva, Switzerland, 31 October.](https://reader030.fdocuments.in/reader030/viewer/2022032707/56649e4c5503460f94b40aa8/html5/thumbnails/17.jpg)
Additional Responses (by Mode and Age)
![Page 18: Adding a Mode as a Final Step in the Follow-up of a Panel Survey Seminar on New Frontiers for Statistical Data Collection Geneva, Switzerland, 31 October.](https://reader030.fdocuments.in/reader030/viewer/2022032707/56649e4c5503460f94b40aa8/html5/thumbnails/18.jpg)
Response Rate (by Education)
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Additional Responses (by Mode and Education)
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THANK YOU FOR YOUR ATTENTION!