LisNZ Data Collection

The survey involves a longitudinal design where the same migrants are interviewed three times over a period of three years. Individual migrants (as opposed to household units), are used for the selection of the LisNZ sample, the collection of data, and the analysis of the results from the survey. The survey was designed to produce estimates for several subpopulations defined by immigration approval category and region of origin. It was estimated that 5,000 completed interviews in wave 3 would produce estimates of the required accuracy. A large initial sample was required to achieve this target and a stratified systematic random design was used to achieve this. A sample of 12,202 migrants was randomly selected to participate in the survey. The migrants that were interviewed at wave 1 were then followed up for interview in wave 2 and 3. Data collection method The sample of migrants (both onshore and offshore) was selected from 1 November 2004 to 31 October 2005. As offshore migrants can arrive in New Zealand at any time up to 12 months after residence approval, the offshore arrival period is from 1 November 2004 to 31 October 2006. Consequently, the wave 1 interviews occurred between 1 May 2005 and 30 April 2007. Wave 2 interviews occured 12 months after the first interview, between 1 May 2006 and 30 April 2008. The LisNZ was conducted using computer-assisted face-to-face interviews. The questionnaire was translated into each of the designated survey languages. en-NZ