Web Survey Bibliography
In the paper two different methods for the correction of self-selection bias in a panel Web surveys estimates are proposed and the obtained results are compared. The web panel is the result of the self-selection process of 134 hotels, which joined the Turi-Web data collection program of the Province of Florence (Italy). For the panel of respondents hotels the monthly presences of tourists are timely available by few days from the end of the reference month. The information provided is relevant for Local Government Agencies, but it is affected by self-selection bias. The adjusted estimates are obtained in two steps. At the first step generalized regression estimators (Särndal and Lundström, 2005) are here used as a tool to reduce the bias. Then the cross-sectional preliminary estimates for month t are adjusted by the method proposed by Rao et al (1989), which modifies the estimated level and change on the basis of the data available for the t - 1, t - 2,L, t - k previous months.
The results are compared with those obtained changing only the first step of
estimation by simply weighting the collected data by the reciprocal of the estimated response probability (Särndal and Swensson, 1987), and then treating the crosssectional preliminary estimates by the Rao et al. methodology.
The true monthly totals for the whole population of hotels are available after several months. This makes possible to quantify the effectual self-selection bias, the estimation error and the extent to which the two proposed adjustment methods are useful to correct the self-selection bias itself. The methodology is applied to monthly data collected by the Province of Florence from January 2005 to December 2006.
Web Survey Bibliography - Internet Survey Methodology workshop 2009 (24)
- Pictures in Web Surveys; 2009; Toepoel, V., Couper, M. P.
- National readership surveys: Moving from probability face-to-face surveys to Internet panels; 2009; Vehovar, V., Slavec, A., Petric, I., Sargac, M.
- Why don’t all Businesses report on Web?; 2009; Haraldsen, G.
- An experiment on the effects of non-response reweighting on estimators' precision in a web survey; 2009; Fabrizi, E., Biffignandi, S., Toninelli, D.
- Dynamic feedback in open-ended questions: Experiments on the visual design language of Web surveys; 2009; Fuchs, M.
- Effects of monetary incentives on participation in a two-wave online survey; 2009; Bandilla, W., Haas, I.
- Response Order and Response Distributions: The Format of the Response Options in a Web Survey; 2009; Tourangeau, R., Conrad, F. G., Couper, M. P., Balter, O.
- Anticipated estimation from a panel Web survey: the case of the presence of tourists in the Province...; 2009; Scaffai, G., Pratesi, M.
- Statistical analysis of on-line courses; 2009; Baelter, O.
- Methodological approaches of Web 2.0; 2009; Neubarth, W.
- Is this e-mail relevant? An eyetracking experiment on how potential respondents read e-mail invitations...; 2009; Kaczmirek, L., Faaß, T., Galesic, M.
- File transfer with built-in editing features; 2009; Erikson, J.
- From paper to internet: Design challenges when mixing modes in longitudinal surveys; 2009; Stax, H.-P., Thomsen, P.
- The Use of Audit Trails in Business Web Surveys; 2009; Snijkers, G., Morren, M.
- Comparing the results of Web surveys on volunteer versus probabilistically selected panels of participants...; 2009; Galesic, M.
- Yes, VASs can! Increasing the accuracy of survey measurements with computerized visual analogue scales...; 2009; Funke, F., Reips, U. -D.
- Using Mail Contact to Sample and Encourage Submission of Questionnaire Answers Over the Internet; 2009; Dillman, D. A., Messer, B. L., Millar, M. M.
- Improving the Design of Complex Matrix Questions; 2009; Couper, M. P., Tourangeau, R., Conrad, F. G.
- Interactive aspects of web surveys; 2009; Conrad, F. G.
- Use of Web surveys in Official Statistics; 2009; Bethlehem, J.
- Relations between functionality and usability of Web survey software tools: An empirical evaluation; 2009; Berzelak, N., Lozar Manfreda, K.
- Donations to charity as incentives in online panels; 2009; Goeritz, A.; Hox, J.
- Turning Grid Questions into Sequences in Business Web Surveys; 2009; Haraldsen, G., Bergstrøm, Y.
- The Electronic Questionnaire Experience in Business Surveys: mode effects on quality and on response...; 2009; Biffignandi, S., Siesto, G., Zeli, A.