Prior to any survey, we do focus group sessions where we try to invite different types of people to respond and see what could be caveats around the way we ask questions and how we address things to make sure that we don't bias the results. There are other international surveys on victimization as well. There's a huge community where we consult among each other. I'm not sure, maybe there are protective factors more than cultural biases associated with more recent immigrants about the likelihood of being victimized outside the household. But as statisticians pinpointing the protective factor and differentiating cultural bias in responding would be impossible.
On April 12th, 2016. See this statement in context.