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Table 3 Our classification of highest educational attainment based on the ONS-LS educational variables

From: Enabling the examination of long-term mortality trends by educational level for England and Wales in a time-consistent and internationally comparable manner

Education*

Highest educational attainment

Census 1971; ONS-LS variable(s) used**: EDUC7

High

Higher university degrees (EDUC7 = 0); Other degrees, and equivalents (EDUC7 = 1)

Middle

A-level and equivalent (EDUC7 = 2); Other qualifications higher than A-level but below degree level (EDUC7 = 3)

Low

None (EDUC7 = 4)

Missing

None stated (EDUC7 = 5)

Census 1981; ONS-LS variable(s) used: QMLVHIQ8

High

Higher degrees of UK standard (QMLVHIQ8 = 1); First degrees and all other qualifications of first degree standard (QMLVHIQ8 = 2)

Middle

Qualifications above GCE (O- and A-levels) but not first and higher degrees (QMLVHIQ8 = 3)

Low

No qualifications obtained since the age of 18 (QMLVHIQ8 =  − 9)

Missing

Highest qualification is not stated (QMLVHIQ8 = 4)

Census 1991; ONS-LS variable(s) used: QMLVHQT9 and QMQUAL19

High

Higher degrees of UK standard (QMLVHQT9 = 1); First degrees and all other qualifications of first degree standard (QMLVHQT9 = 2)

Middle

Qualifications above GCE (O- and A-levels) but not first and higher degrees (QMLVHQT9 = 3)

Low

No qualifications obtained since the age of 18 excluding qualifications normally obtained at school (QMQUAL19 =  − 9)

Missing

Rest of “not applicable or missing” (Remaining of QMLVHQT9 =  − 9)

Census 2001; ONS-LS variable(s) used: HLQP0, and QUP0 and PQUP0

High

First Degree (e.g., BA,BSc) (QUP0_5 = 1); Higher Degree (e.g., MA, PhD, PGCE, post-graduate certificates/diplomas) (QUP0_6 = 1); NVQ Level 4–5, HNC, HND (QUP0_10 = 1)

Middle

Upper-level secondary qualifications, such as A-levels and advanced GNVQ (HLQP0 = 13); Professional qualifications (qualified teachers, medical doctors, dentists, nurses) without a degree (qualprofdegree = 0); Other academic (e.g., City and Guilds, RSA/OCR, BTEC/Edexcel) and professional qualifications (HLQP0 = 15)

Low

No academic or professional qualifications (HLQP0 = 10); Qualifications below upper level secondary education, such as CSEs and GCSEs (HLQP0 = 11; HLQP0 = 12)

Missing

Missing (HLQP0 =  − 7); Not applicable (HLQP0 =  − 9)

Census 2011; ONS-LS variable(s) used: HLQP11 and QUP11

High

Degree (e.g., BA, BSc) and higher degree (e.g., MA, PhD, PGCE) (QUP11_8 = 1); NVQ Level 4–5, HNC, HND, RSA Higher Diploma, BTEC Higher Level (QUP11_9 = 1)

Middle

Apprenticeships (HLQP11 = 13); Upper-level secondary qualifications, such as A-levels, advanced GNVQ, advanced Baccalaureate (HLP11 = 14); Professional qualifications without a degree (QUP11_10 = 1 & QUP11_8 = 0 & QUP11_9 = 0); Other: vocational/work-related qualifications, foreign qualifications/qualifications gained outside the UK (NI) (Not stated/level unknown) (HLQP11 = 16)

Low

No qualifications (HLQP11 = 10); Qualifications below upper-level secondary educations, such as CSEs and GCSEs (HLQP11 = 11; HLQP11 = 12)

Missing

Missing (HLQP11 =  − 6); No code required (HLQP11 =  − 9)

  1. Source information: ONS-LS
  2. *Low = no, pre-primary, primary, and lower secondary education (ISCED-1997 0–2); middle = upper secondary and post-secondary non-tertiary education (ISCED-1997 3–4); high = tertiary education (ISCED-1997 5–6) [23]. ** Additional file 1: Table S1 lists the summary ONS-LS educational variables (EDUC7, QMLVHIQ8, QMLVHQT9, HLQP0, HLQP11); Appendix II of the Additional file 1: Appendix II l lists the additional educational variables used