1. "The Data that did not arrive for the Date. Talkin' the Nonresponse Blues" Karsten Boye Rasmussen Department of Marketing and Management, University of Southern Denmark, Odense, Denmark kbr@sam.sdu.dk Heiko Thimm School of Engineering, Pforzheim University, Pforzheim, Germany

3. Did not answer

5. Number of pregnancies MaleFemale Did not answer 0-nErrorOK over nErrorProbable error

6. Did not answer - skip pattern Number of pregnancies Male Should not answer Female Should answer Did not answer IrrelevantNo answer 0-nErrorOK over nErrorProbable error

7. Did not answer Number of pregnancies Male Should not answer Female Should answer Did not answer IrrelevantNo answer 0-nErrorOK over nErrorProbable error

9. Did not answer The missing data

10. Missing Data

11. Nonresponse

12. Nonresponse

13. Nonresponse

14. logos

15. eBusco.net survey Production SME companies in South Denmark & North Germany Response rate 12.6% 64 and 66 respectively 130 of the selected 1033 companies !

16. Response rates in other SME surveys WalesJones, 200326% UKDaniel, 2002a10.4%"deseletion" UKDaniel, 2002b 4.5% SingaporeThong, 199913.8% 40.6% mortality of firms AustraliaGoode, 200042%

17. Potential effect of nonresponse 64 of 130 companies have an English web-site Thats 50% How about the 903 nonrespondents? A extreme: They all have English web-site => 94% B extreme: None have English web-site => 6% So the correct answer would be: 50% +/- 44%

19. The Blues Woody Guthrie

20. The Blues Talkin' World War III Blues

21. Potential effect of nonresponse 64 of 130 companies have an English web-site Thats 50% How about the 903 nonrespondents? A extreme: They all have English web-site => 94% B extreme: None have English web-site => 6% So the correct answer would be: 50% +/- 44%

22. Confidence intervals for nonresponse

23. Comparison with known value "archival analysis" as the quest for "the third variable" in causality we have not found the variable causing nonresponse yet Data Source

24. Extrapolation of the nonrespondents The respondents And the late respondents Assuming nonresponse = late Question: How difficult is it to join two points with a straight line? Time

25. Data Source phone calls Passive showing not planned socially acceptable but did not find the time Active Expressing planned behavior Passive Busy No answer Active Uinterested Passive Polite

26. phone calls Passive nonresponse will not have nonresponse bias Active nonresonse will have nonresponse bias Rogelberg and Stanton (2007, p. 201) Passive Busy No answer Active Uinterested Passive Polite

27. Thundershields soldiers? Are nonrespondents.. Karlsten - Marstrand became a nobleman 1716 and got his name former Peter Wessel

28. Contact and participation SurveyNo contact Contact with Business agency Total Nonresponse 413 88.3% 28 75.7% 441 Participation in survey 55 11.3% 9 24.3% 64 Total 46837505 Data Source

29. Conclusion Significant difference! Nonrespondents are different!

31. thanks talkin' Karsten Boye Rasmussen associate professor kbr@sam.sdu.dk Institute of Marketing and Management University of Southern Denmark Campusvej 55, DK-5230 Odense M, Denmark +45 6550 2115 fax: +45 6593 1766 ?

32. Talkin' World War III blues Well, now time passed and now it seems Everybody's having them dreams. Everybody sees themselves walkin' around with no one else. Half of the people can be part right all of the time, Some of the people can be all right part of the time. But all the people can't be all right all the time I think Abraham Lincoln said that. "I'll let you be in my dreams if I can be in yours," I said that.