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METADATA :: Sample characteristics :: United Kingdom (1991 2001 Selected All )

Census Characteristics	1991
Title	1991 Census
Census Agency	Office of Population Censuses and Surveys
Population	Every person who spends census night (21-22 April) in the household, including anyone staying temporally; any other people who are usually members of the household but on the census night are absent on holiday, at school or college, or for any other reason even if they are being included on another census form elsewhere, anyone who arrives here on Monday 22nd April who was in Great Britain on the Sunday and who has not been included as present on another census form; and any newly born baby born before the 22nd April, even if still in hospital.
Universe
De jure or de facto	De jure
Enumeration unit	Occupied private dwellings and communal establisments
Census day	April 21, 1991
Field work period	-
Enumeration forms used	Form for private households (H), Form for making and individual return (I), and Form for communal establisments, HM Ships or other vessels (L)
Type of field work	Self-enumertation
Respondent	The head or Joint Heads or members of the household aged 16 or over
Coverage	2 % of the population of Great Britain missed entirelly and a further 1,6 per cent for whom records
Microdata sample characteristics	1991
Sample microdata source	Office of Population Censuses and Surveys. Constructed from fully-coded household and communal estab
Sample design	All fully-coded household forms were ordered geographically with the lowest level the enumeration area. Households were then grouped into batches of 10 and one household selected at random from each batch. The two per cent Individual sample was then drawn from the remaining households were stratified into groups of nine, and two individuals selected from each group at random. Individuals in communal establisments were stratified into groups of five and one individual selected at random from each group. NOTE: The sample excludes Northern Ireland. It includes England, Scotland and Wales. NOTE 2: Many data items are not available for households with 12 or more persons, for confidentiality reasons. These cases are code "not in universe" in the affected variables
Sample unit	Dwelling
Sample fraction	2 %
Sample fraction (private households)
Sample fraction (institutional households)
Sample size (person records)	541.894
Sample size (private households)
Sample size (institutional households)
Sample weights	Weights computed by census agency
Units identified	1991
Dwellings	No
Vacant units	No
Households	Yes
Individuals	Yes
Group quarters	Yes
Settled/unsettled Population
Special populations	-
Unit definitions	1991
Dwellings	-
Households	A household comprises either one person living alone or a group of people not necessarily related, living at the same address with common housekeeping - that is, sharing at least one meal a day or sharing a living room or sitting room. People staying temporaly with the household are included
Institutional population
Group quarters	-
Unsettled population