3.1. Sample and data
In Vietnam our survey focuses on Son La province.6 Here, in
2007/2008, we interviewed the same households that had previously
been interviewed as part of the Vietnamese Household Living
Standard Survey (VHLSS) (2004). According to the General Statistics
Office (GSO) in Hanoi, these household are a representative sample
of households in Son La province, drawn using a three-stage random
sampling procedure. The sample was drawn from each district