Table 3.

Information collected by the Niakhar HDSS

Level		Date
Village Public facilities (GIS)
	Health centres, schools, bore holes, drinking fountains and wells, roads and trails, electricity	2003
Household Head Facilities
	Name of household head	Every 4 months
	Household domestic and farm properties	1998 and 2003
	Housing characteristics
Individual
Birth	Date of birth, place of birth, name, child characteristics (sex, ethnic group, religion), information on mother and father	Every 4 months
Pregnancy	Date of registration, date and place of delivery, pregnancy outcome	Every 4 months
Death	Date and cause of death	Every 4 months
Out-migration	Date, place, and purpose of out-migration
In-migration	Identifying information (date of birth, sex, identification of mother, identification of father, previous household and village, relationship to the head of household, spousal relationship), date, place and purpose of in-migration, maternal history (women), activity, education, religion, marital status	Every 4 months
Immunization	All vaccinations of children under 15 years of age	Every 4 months
Measles	All cases of measles in children under 5 years of age	Every 4 months
Whooping cough	All cases of pertussis in children under 5 years of age	Every 4 months
Weaning	Date of weaning