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Comparable indicators

ESDS Longitudinal has compiled a number of tables below that allows users of the core longitudinal studies to look up a selection of variables from each study that match, or are equivalent to, the Office for National Statistics Primary set of harmonised concepts and questions.

Where a w*, s* or year* appears in a variable name or file name, this should be replaced by the appropriate number, letter or year of the wave or sweep. The content was last updated January 2012.

1970 British Cohort Study (BCS70)
British Household Panel Survey (BHPS)
English Longitudinal Study of Ageing (ELSA)
Families and Children Study (FACS)
Growing Up in Scotland (GUS)
Longitudinal Study of Young People in England (LSYPE)
Millennium Cohort Study (MCS)
National Child Development Study (NCDS)
Understanding Society

1970 British Cohort Study

Output variable

Maps exactly to ONS categories? Wave Data file Variable name
Gender Yes. 34-year follow-up BCS_2004_FOLLOWUP BDS7SEX
Yes. 38-year follow-up BCS_2008_FOLLOWUP BDS8SEX
Age Yes. 34-year follow-up BCS_2004_FOLLOWUP BD7RAGE11
Yes. 38-year follow-up BCS_2008_FOLLOWUP B8DMAGE
Legal marital/partnership status No. 34-year follow-up BCS_2004_FOLLOWUP BD7MS
No. 38-year follow-up BCS_2008_FOLLOWUP B8MS
Living arrangements No. 38-year follow-up BCS_2008_FOLLOWUP B8COHAB
Ethnic origin Yes. Matches 2001 Census categories. 34-year follow-up BCS_2004_FOLLOWUP BD7ETHNIC
Tenure No. 34-year follow-up BCS_2004_FOLLOWUP B7TEN2
No. 38-year follow-up BCS_2008_FOLLOWUP B8TEN2
Economic status No. 34-year follow-up BCS_2004_FOLLOWUP BD7ECACT
No. 38-year follow-up BCS_2008_FOLLOWUP BD8ECACT
Industry (SIC) 1992 Yes. 34-year follow-up BCS_2004_FOLLOWUP B7SIC92
Industry (SIC) 2003 Yes. 38-year follow-up BCS_2008_FOLLOWUP B8SIC301
Occupation (SOC90) Yes. 34-year follow-up BCS_2004_FOLLOWUP B7SOC90
Yes. 38-year follow-up BCS_2008_FOLLOWUP B8SOC901
Occupation (SOC2000) Yes. 34-year follow-up BCS_2004_FOLLOWUP B7XSO000
Yes. 38-year follow-up BCS_2008_FOLLOWUP B8SOC901
Socio-economic classification (NS-SEC) Yes. 34-year follow-up BCS_2004_FOLLOWUP B7NSSE01; BD7NS8
Yes. 38-year follow-up BCS_2008_FOLLOWUP B8NSSE01
Full-time and part-time work Available from the economic status variables, see section above.
Educational attainment (highest qualification) No, but ONS categories can be created. 34-year follow-up BCS_2004_FOLLOWUP BD7HQ5; BD7HQ13


British Household Panel Survey

Output variable

Maps exactly to ONS categories? Wave Data file Variable name
Gender Yes. All w*INDRESP; w*INDALL w*SEX
Age Single year of age at date of interview. All w*INDRESP; w*INDALL w*AGE
Single year of age at 01.12.[year]. All w*INDRESP; w*INDALL w*AGE12
Legal marital/partnership status Yes. All w*INDRESP w*MLSTAT
Living arrangements No. All w*INDRESP; w*INDALL w*MASTAT
Ethnic origin No. Waves 1-12 (a-l) w*INDRESP w*RACE
Yes. Matches 2001 Census categories. Wave 13> (m>) w*INDRESP w*RACEL
Tenure No. All w*HHRESP w*HSOWND
Yes. All w*INDRESP w*TENURE
Economic status No. All w*INDRESP w*JBSTAT
Industry (SIC) 1980 Yes. Waves 1-11 (a-k) w*INDRESP w*JBSIC
Industry (SIC) 1992 Yes. Waves 4, 7, 12> (d, g, l>) w*INDRESP w*JBSIC92
Occupation (SOC90) Yes. All w*INDRESP w*JBSOC
Occupation (SOC2000) Yes. Waves 11> (k>) w*INDRESP w*JBSOC00
Socio-economic classification (NS-SEC) Yes. Operational sub-categories classes. All w*INDRESP w*JBSEC
Full-time and part-time work Yes. All w*INDRESP w*JBFT
Educational attainment (highest qualification) No, but ONS categories can be created. All w*INDRESP w*QFEDHI


English Longitudinal Study of Ageing

Output variable

Maps exactly to ONS categories? Wave Data file Variable name
Gender Yes. Wave 0 WAVE0_year*_DATA SEX
Yes. Waves 1> WAVEw*_CORE_DATA_version* INDSEX
Age Yes. Wave 0 WAVE0_year*_DATA AGER
Yes. Waves 1> WAVEw*_CORE_DATA_version* INDAGER
Legal marital/partnership status Yes. Wave 0 WAVE0_year*_DATA MARITAL
Yes. Waves 1> WAVEw*_CORE_DATA_version* DIMAR
Living arrangements No, but ONS categories can be created. Wave 0, year 1999 and 2001 WAVE0_1999_DATA; WAVE0_2001_DATA MARSTATB
No, but ONS categories can be created. Waves 1> WAVEw*_CORE_DATA_version* COUPLE
Ethnic origin No, categories in output variable are collapsed to White / Non-white to avoid disclosure. Wave 0 WAVE0_year*_DATA ETHNICR
No, categories in output variable are collapsed to White / Non-white to avoid disclosure. Waves 1> WAVEw*_CORE_DATA_version* AETHNICR (W1); FQETHNR (W2>)
Tenure No. Wave 0 WAVE0_year*_DATA TENUREB
No. Waves 1> WAVEw*_CORE_DATA_version* HOTENU
Economic status No. Wave 0 WAVE0_year*_DATA ECONACT
No. Waves 1> WAVEw*_CORE_DATA_version* WPDES
Industry (SIC) 1992 Yes. Wave 0 WAVE0_year*_DATA SIC; SIC92
Industry (SIC) 2003 Yes. Wave 4 WAVEw*_CORE_DATA_version* SIC2003
Industry (SIC) 2007 Yes. Wave 4 WAVEw*_CORE_DATA_version* SIC2007
Occupation (SOC90) Yes. Wave 0 WAVE0_year*_DATA SOC; SOC90
Occupation (SOC2000) Yes. Wave 0, year 2001 WAVE0_2001_DATA SOC2000
Yes. Wave 1 WAVE1_CORE_DATA_version* EXS2000
Socio-economic classification (NS-SEC) Yes. Wave 0, year 2001 and Wave 4 WAVE0_2001_DATA; WAVE4_CORE_DATA_version* NSSEC
Yes. Waves 1-2 WAVE*_CORE_DATA_version* ANSSEC
Full-time and part-time work Yes. Wave 0 WAVE0_year*_DATA FTPTIME
Educational attainment (highest qualification) No, but ONS categories can be created. Wave 1-2 WAVE*_CORE_DATA_version* FQQUZM1-3; EDQUAL (W1)


Families and Children Study

Output variable

Maps exactly to ONS categories? Wave Data file Variable name
Gender Yes, gender of household members. Waves 3-10 FACS_year*_FAMILY_LEVEL w*SEX_[01-13]
Yes, gender of child. Waves 3-10 FACS_year*_CHILD_LEVEL w*CSEX
Age Yes, age of household members. Waves 3-10 FACS_year*_FAMILY_LEVEL w*PERAG[01-13]
Yes, age of child. Waves 3-10 FACS_year*_CHILD_LEVEL w*CAGE
Legal marital/partnership status Yes, marital status of main adult respondent. Waves 3-10 FACS_year*_FAMILY_LEVEL w*MARITAL
Living arrangements No, but ONS categories can be created. Earlier waves do have some questions on cohabitation and living together as couple but derived variables would need to be created. Waves 8-10 FACS_year*_FAMILY_LEVEL w*COHAB
Ethnic origin Yes, ethnic origin of main adult respondent. Waves 1-10 FACS_year*_FAMILY_LEVEL w*ETHNIC
Tenure No. Waves 1-10 FACS_year*_FAMILY_LEVEL w*TENURE; w*TENTYPE
Economic status No. Waves 1-10 FACS_year*_FAMILY_LEVEL w*EMPSTAT
Industry (SIC) 1992 Yes, 9 groups only. Waves 1-10 FACS_year*_FAMILY_LEVEL w*RSIC9[2]
Occupation (SOC2000) Yes, 9 groups only. Waves 1-10 FACS_year*_FAMILY_LEVEL w*SOCR[9]
Socio-economic classification (NS-SEC) Yes, long version. Waves 1-2 FACS_year*_FAMILY_LEVEL w*RNSSEC
Educational attainment (highest qualification) No, but ONS categories can be created. Waves 1-10 FACS_year*_FAMILY_LEVEL w*PED3A (W1-2); w*HIQUA (W3>)


Growing Up in Scotland

Output variable

Maps exactly to ONS categories? Sweep/Cohort Data file Variable name
Gender Yes, gender of household members. All sweeps and cohorts All Ms*HGSX[2-12]
Yes, gender of study child. All sweeps and cohorts All Ms*HGSX1
Age Yes, age of household members. All sweeps and cohorts All Ds*HGA[2-12]
Yes, age of study child. All sweeps and cohorts All Ms*HGA1
Legal marital/partnership status No. All sweeps and cohorts All Ds*HGMR[1-12]
Living arrangements No, but ONS categories can be created. All sweeps and cohorts All MEHGLV[1-12]
Ethnic origin Ethnicity of respondent at Sweep 1. White or other ethnic group classification only. Sweep 1 birth and child cohorts GUSSW1B_V3; GUSSW1C_V3 DAETHGPM
Ethnicity of respondent at current Sweep. White or other ethnic group classification only. All sweeps and cohorts All Ds*METH07
Ethnicity of study child at Sweep 1. White or other ethnic group classification only. Sweep 1 birth and child cohorts GUSSW1B_V3; GUSSW1C_V3 DAETHGPC
Tenure Yes. All sweeps and cohorts All Ms*ZHOU05
Economic status No, a series of variables can be used to determine the economic status. All sweeps and cohorts All Ms*WEST[01-12]
Socio-economic classification (NS-SEC) Yes, six category version. All sweeps and cohorts All Ds*MSEC01
Full-time and part-time work Two variables per sweep and cohort can be used to create the categories. All sweeps and cohorts All Ms*WEST01; Ms*WEST02
Educational attainment (highest qualification) No, but ONS categories can be created. All sweeps and cohorts All Ds*MEDU01


Longitudinal Study of Young People in England

Output variable

Maps exactly to ONS categories? Wave Data file Variable name
Gender Yes, gender of young person. All WAVE_*_LSYPE_YOUNG_PERSON_FILE; LSYPE_W7_NOV2011_SUPPRESSED W*SEXYP; W7SEX (W7)
Age No, date of birth month and year recorded. Wave 1 WAVE_ONE_LSYPE_YOUNG_PERSON_FILE DOBYEARYP; DOBMONTHYP
Ethnic origin No. Waves 1, 2 and 4 WAVE_*_LSYPE_YOUNG_PERSON_FILE W*ETHGRPYP
Full-time and part-time work No, but ONS categories can be created. Variable records hours per week young person spends on paid job. Waves 1-3 WAVE_*_LSYPE_YOUNG_PERSON_FILE W*JOBTIMEYP
No, but ONS categories can be created. Derived variable recording employment status of young person. Waves 3-4 WAVE_*_LSYPE_YOUNG_PERSON_FILE W*EMPSYP
Educational attainment (highest qualification) Various variables at all waves about qualifications currently studying towards. Derived variable available for highest academic qualification studied at Wave 6. Wave 6 WAVE_SIX_LSYPE_YOUNG_PERSON_FILE W6ACQNO


Millennium Cohort Study

Output variable

Maps exactly to ONS categories? Sweep Data file Variable name
Gender Yes. All. MCSs*_HOUSEHOLD_GRID s*HCSEX00
Age Yes, age in days. All. MCSs*_HOUSEHOLD_GRID s*HCAGE00
Ethnic origin No. Matches 2001 Census categories but collapsed to 6, 8 or 11 categories. All. MCSs*_PARENT_INTERVIEW s*DC06E00; s*DC08E00; s*DC11E00
Tenure No. All. MCSs*_PARENT_INTERVIEW s*MROOW00 (S1-3); DDROOW00 (S4)


National Child Development Study (Sweeps 6, 7 and 8 only)

Output variable

Maps exactly to ONS categories? Sweep Data file Variable name
Gender Yes. Sweeps 6-8 All N622_S (S6); ND7SEX (S7); ND8SEX (S8)
Age Yes. Sweeps 6-7 All AGE (S6); N7RAGE11 (S7)
Legal marital/partnership status No. Sweeps 6-7 All MARSTAT2 (S6); ND7MS (S7)
Living arrangements No. Sweeps 7-8 All ND7MS (S7); N8COHAB (S8)
Ethnic origin Yes. Sweeps 6 and 8 All ETHNIC (S6); N8ETHNIC and ND8ETHNC (S8)
Tenure No. Sweeps 6-8 All TENURE2 (S6); N7TEN (S7); N8TEN (S8)
Economic status No. Sweeps 6-8 All ECONACT (S6); ND7ECACT (S7); N8ECON02 (S8)
Industry (SIC) 1992 Yes. Sweep 7 All N7SIC92
Industry (SIC) 2003 Yes. Sweep 8 All N8SIC3
Occupation (SOC90) Yes. Sweeps 6-8 All SOC (S6); N7SOC90 (S7); N8SOC90 (S8)
Occupation (SOC2000) Yes. Sweeps 7-8 All N7XSO000 (S7); N8SOC (S8 with dots);N8SOCX(S8 without dots)
Socio-economic classification (NS-SEC) Yes. Sweeps 6-8 All SEG (S6); N7NSSEC (S7); N8NSSEC (S8)
Full-time and part-time work No, but ONS categories can be created. Sweeps 7-8 All ND7ECACT (S7); N8ECON02 (S8)
Educational attainment (highest qualification) No, questions asked on highest qualifications obtained since last interview. Sweeps 7-8 All ND7ACHQ1 (S7); ND8ACHQ1 (S8); ND8AGHM (S8 but covers S5-8)


Understanding Society

Output variable

Maps exactly to ONS categories? Wave Data file Variable name
Gender Yes. All w*_INDRESP; w*_INDALL w*_SEX
Age Yes. All w*_INDRESP; w*_INDALL w*_DVAGE
Legal marital/partnership status Yes. All w*_INDRESP w*_MARSTAT; w*_MLSTAT
Living arrangements Yes. All w*_INDRESP; w*_INDALL w*_LIVESP; w*_LIVEWITH
Ethnic origin Yes, uses Census 2011 ethnicity classification. All w*_INDRESP w*_RACEL
Tenure Yes. All w*_HHRESP w*HSOWND; w*_TENURE_DV
Economic status No. All w*_INDRESP w*_JBSTAT
Industry (SIC) 2007 Yes, condensed 2-digit version. All w*_INDRESP w*_JBSIC07_CC
Occupation (SOC90) Yes, condensed 2-digit version. All w*_INDRESP w*_JBSOC90_CC
Occupation (SOC2000) Yes, condensed 2-digit version. All w*_INDRESP w*_JBSOC00_CC
Socio-economic classification (NS-SEC) Yes, long, 8-class, 5-class and 3-class versions. All w*_INDRESP w*_JBNESSEC_DV; w*_JBNESSEC8_DV; w*_JBNESSEC5_DV; w*_JBNESSEC3_DV
Full-time and part-time work Yes. All w*_INDRESP w*_JBFT_DV
Educational attainment (highest qualification) No, but ONS categories can be created. All w*_INDRESP w*_QFHIGH; W*_HIQUAL_DV


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