My answer will apply specifically to New Brunswick. We definitely used the approach adopted by Rodrigue Landry from the Canadian Institute for Canadian Research on Linguistic Minorities, which is located in Moncton. Increasingly, in our studies, we break down New Brunswick into three of four regions—homogenous francophone regions, manly francophone regions and regions, such as Moncton, where one-third of the population is francophone, where exchanges with the anglophone minorities are obviously different than those in homogenous regions.
On October 17th, 2006. See this statement in context.