Food and You 2: Technical Report: Fieldwork and response rates

Letters and reminders

Letters and reminder strategy

The mailing approach follows Ipsos’ standard push-to-web methodology:

1. An initial invitation letter is issued to sampled addresses inviting up to two adults to go online and complete the online questionnaire.  
2. The first reminder letter is issued around 2 weeks after the initial invite. issued. Reminder letters are only sent to non-responding addresses and addresses where one adult has completed the online questionnaire but not a second adult (the presence of an eligible second adult is determined in the first questionnaire). 
3. The second reminder letter is only sent to non-responding addresses and addresses where one adult has completed the online questionnaire but not a second adult. All of these letters are…