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METADATA :: Sample characteristics :: Switzerland (1970 1980 1990 2000 Selected All )

Census Characteristics	1990
Title	Swiss Federal Population Census of 1990
Census Agency	Federal Statistical Office
Population	All persons residing in Switzerland, except foreign diplomats stationed in Switzerland and their families.
Universe
De jure or de facto	De facto
Enumeration unit	Household
Census day	December 4, 1990
Field work period	November 23-31, 1990
Enumeration forms used	There are three forms: (i) person questionnaire, (ii) dwelling [household] questionnaire, and (iii) building questionnaire.
Type of field work	Direct and self-enumeration
Respondent	All person for person questionnaire; the head of household for dwelling and building questionnaires
Coverage	-
Microdata sample characteristics	1990
Sample microdata source	Federal Statistical Office
Sample design	Systematic sample of every 20th household, drawn by the Federal Statistical Office
Sample unit	Households
Sample fraction	5 %
Sample fraction (private households)
Sample fraction (institutional households)
Sample size (person records)	342.797
Sample size (private households)
Sample size (institutional households)
Sample weights	Self-weighting. Expansion factor = 20.
Units identified	1990
Dwellings	No
Vacant units	Yes
Households	Yes
Individuals	Yes
Group quarters	Yes
Settled/unsettled Population
Special populations	-
Unit definitions	1990
Dwellings	Buildings isolated or separated by a wall that, on the day of the census, is inhabited or habitable. Buildings that are uninhabited on the day of the census are recorded only if equipped for permanent residence and are accessible throughout the year. For duplexes, either in groups or in series, each building separated from the others by a wall, going from the cellar to the roof, is considered an independent building.
Households	Family members living together and all other persons living with them (e.g., mainds, apprentices, lodgers, permanent guests, nurses, etc.); persons living in the same dewlling without specific family ties; persons living alone in a dwelling.
Institutional population
Group quarters	Collective households are groups of persons who reside in hotels, boarding homes, care facilities, hospitals, company dormitories, etc.
Unsettled population