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Reasons for unit and partial nonresponse in Web Surveys Vasja Vehovar, Gašper Koren,  Katja Lozar Manfreda University of Ljubljana
Outline ,[object Object],[object Object],[object Object],[object Object]
Trends in Survey Industry ,[object Object],[object Object],[object Object]
Participation in Web surveys
Technological environment ,[object Object],[object Object],[object Object]
Social environment ,[object Object],[object Object]
Survey design ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Respondents characteristics ,[object Object],[object Object],[object Object],[object Object]
Nonresponse process in Web surveys is extremely structured
The s urvey ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Respondents in Web survey ,[object Object],9.673 (70%) solicitated with Banner Advertising 4.199 (30%) solicitated with  e-Mail invitation 140 can’t categorize
Evaluation surveys RIS2001 Web Survey 2 telephone surveys  and   2 web surveys
Telephone evaluation  Yes (10%) No (90%)
Telephone evaluation (n=5016) Yes (10%) No (90%) No 67% /  7% Yes 33% /  3%
Telephone evaluation (n=5016) Yes (10%) No (90%) No 67% /  7% Yes 33% /  3% No 25% /  1% Yes 75% /  2%
Telephone evaluation (n=5016) Only first  few Q 13% I answered part  of the Qnaire 33 % I answerd whole Qnaire 63% Yes (10%) No (90%) No 67% /  7% Yes 33% /  3% No 25% /  1% Yes 75% /  2%
Web evaluation (n=349) No 43% Yes 57%
Web evaluation (n=349) No 43% Yes 57% No  22%  / 13% Yes  78% /  44%
Web evaluation (n=349) No 43% Yes 57% No  22% / 13% Yes  78% /  44% No 8%  / 3% Yes  92%  / 41%
Web evaluation (n=349) Only first  few Q 10% I answered part  of the Qnaire 19 % I answerd whole Qnaire 75%
Reported  Qnaire F low
Nonresponse proces
Why you didn’t click? ,[object Object],[object Object],[object Object],[object Object],[object Object],3% = 15.000 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Why you didn’t start answering? ,[object Object],[object Object],[object Object],[object Object],[object Object],2% = 11.250 15.000
Why you didn’t finish? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],7.088 4.162 15.000 11.250
Socio-demographic factors
Influence on nonresponse process
Conclusions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object]
Evaluation   – e-Mail invitation   Telephone (n=1690) No 97% Yes 3%
Evaluation   – e-Mail invitation   Telephone (n=1690) No 97% Yes 3% No  71%  / 2% Yes  29%  / 1%
Evaluation   – e-Mail invitation   Telephone (n=1690) No 97% Yes 3% No  71%  / 2% Yes  29%  / 1% No 37% Yes 63%
Conclusions ,[object Object],[object Object]
Conclusions ,[object Object],[object Object],[object Object]

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Reasons for unit and partial nonresponse in Web Surveys