Table 1. Living conditions scoring system.

	Basic housing scoring criteria
	Roofing	Walls	Flooring	Sewage system	Water supply	Power supply
Group 1	zinc	concrete	ceramic or brick	WC with sewage system or septic tank	potable from aqueduct	electricity
Group 2	tiles	wood and concrete mix	tiles or wood	latrine, cesspit	well	electricity
Group 3	plastic, palm leaves, nicalit*	wood, zinc, plastic	bare earth	open air	river, stream	no electricity

*Nicalit: cement and asbestos fibres