Household Mail Survey

The household sample was randomly drawn from the two cities of Christchurch, New Zealand, and Hitachi, Japan. From September 2011 to April 2012, the Texas A&M University (USA), Massey University/GNS Science (New Zealand), and Kansai University (Japan) collaboratively conducted mail surveys to 600 households in each city. Following Dillman’s (2000) Tailored Design Method, each household was sent an initial questionnaire and non-respondents were sent a reminder postcard and as many as two replacement questionnaires. This process was terminated when non-respondents had been sent as many as one reminder postcard and three questionnaire packets. There were 257 usable questionnaires from Christchurch for a response rate of 42.8%, and 332 usable questionnaires from Hitachi for a response rate of 55.3%.