Colombia: 1973, 1985, 1993
Kenya: 1989, 1999
Mexico: 1970, 1990, 2000
Vietnam: 1989, 1999

Colombia 1973: All households.
Colombia 1985: Occupied dwellings.
Colombia 1993: All households.
Kenya 1989: Not group quarters.
Kenya 1999: All households.
Mexico 1970-1990: All households.
Vietnam 1989: All households with dwelling information.
Vietnam 1999: All households.

ELECTRIC indicates whether the household had access to electricity.

ELECTRIC is coded into a "Yes" or "No" variable and is fully comparable across all samples.

The presence of electricity was inferred from a question that asked for the main type of lighting. IPUMS-International assumes that all households with electricity use it for lighting.