How to make internet surveys representative: A case study of a two-step weighting procedure
Internet surveys are becoming increasingly popular. Concerns about the representativeness of online samples, however, frequently cast doubts on the validity of conclusions derived from internet survey data. These doubts rest on the fact that not all persons have internet access and on the premise that people are more likely to participate in a survey if the subject matter interests them. This paper presents a two-step procedure for weighting data from online surveys that is based on an explicit behavioral model of internet access and survey participation decisions. We illustrate the application of this scheme in a case study of Perspektive Deutschland, a very large online survey that was conducted in Germany in 2001 with almost 170,000 online respondents. We discuss practical aspects of weighting procedures such as problems caused by large weights as well as theoretical aspects such as the statistical implications of weighting.
|Date of creation:||30 Mar 2004|
|Contact details of provider:|| Postal: Munich Center for the Economics of Aging (MEA) at the Max Planck Institute for Social Law and Social Policy, Amalienstraße 33, 80799 München, Germany|
Web page: http://www.mea.mpisoc.mpg.de/
|Order Information:|| Email: |
When requesting a correction, please mention this item's handle: RePEc:mea:meawpa:04067. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Henning Frankenberger)
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
If references are entirely missing, you can add them using this form.
If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.
Please note that corrections may take a couple of weeks to filter through the various RePEc services.