Table 2 Definitions of variables used in the study
From: Household demand and supply for clean groundwater in the Mekong Delta, Vietnam
Variable | Definition |
General sample and non-GSU user sample | Â |
 Sex | Sex (1 for male; otherwise 0) |
 Age | Age in years |
 Education | Educational level (1, 2, 3, 4, and 5 for illiterate, primary, secondary, high school, and tertiary level, respectively) |
 Occupation | Dummy variable of occupation (1 for farmer; otherwise 0) |
 Ethnic | Ethnic (1 for Kinh; otherwise 0) |
 Residence | Years of residence in the study site |
 Family number | Number of family members |
 Income | Monthly household income (million VND) |
 Distance | Distance from household to nearest GSU (km) |
GSU user sample | Â |
 District-D1 | District (1 for Phong Dien District; otherwise 0) |
 District-D2 | District (1 for Cai Rang District; otherwise 0) |
 District-D3 | District (1 for O Mon District; otherwise 0) |
 Education-D1 | Educational level (1 for illiteracy or primary school; otherwise 0) |
 Education-D2 | Educational level (1 for secondary school; otherwise 0) |
 Residence-D1 | Years of residence (1 for prior to 1975; otherwise 0) |
 Residence-D2 | Years of residence (1 for 1976 to 1985; otherwise 0) |
 Residence-D3 | Years of residence (1 for 1986 to 1995; otherwise 0) |
 Amount 1 | GSU water amount bought monthly |
GSU manager sample | Â |
 Depth | Depth of GSU well (m) |
 Manager education | Dummy variable of educational level (1 for high school or tertiary; otherwise 0) |
 Years GSU established | Number of years the GSU plant has been established (up to 2006) |
 Amount 2 | GSU water quantity sold monthly (m3) |
 Capacity | Designed capacity (number of households) |