Classification: ETHOR71
Short name: ETHOR71
Full name: Ethnic Origin Indicator 1971
General description: Because a question on ethnic origin was not included in the Census until 1991, the Ethnic Origin Indicator was specifically designed for the 1971 Census, to identify people born in the New Commonwealth or Pakistan (NCWP) who are not of UK descent, and people born in Great Britain to parents of a NCWP ethnic origin. It is derived on the basis of own and parentsí country of birth.
The classification uses a three digit coding scheme:
The first digit denotes whether a member's derived ethnicity is 'pure' or 'mixed'. This refers to the countries of birth of the member and their parents. 'Pure' is used for LS members born in the NCWP, and those born outside the NCWP whose parents were both born in the NCWP. 'Mixed' is used for those born outside the NCWP, with one parent born in the NCWP. All others are classified as non-NCWP.
The second digit denotes the member's ethnic group.
The third digit represents the separate religious subgroups for Asian members.
LS description: ethor7 is derived on the basis of own and parentsí country of birth. The variable is only available for people enumerated at the 1971 Census who were traced at NHSCR.
For further description of the derivation of the ethnic origin indicator, see Hattersley and Creeser (1995: 30) ; and Stuart, A (1990) on the relationship between this variable and 1971 own and parentsí country of birth.
For an introduction to the use of ethnicity data in the LS see the web-based training module, provided by the Centre for Longitudinal Study Information and User Support (CeLSIUS) at
Keyword: Cultural
Start date: Census 1971
References: Hattersley, Lin and Rosemary Creeser (1995) Longitudinal Study 1971-1991: History Quality and Organisation of the data. London: HMSO.
Equivalent classifications: