| Type | Independent variable | Meaning | Value |
| Controlled variable | Age | Age |
|
| Sex | Sex | 1 = female, 2 = male | |
| Family’s economic and social capital (Ces) | Res | The interviewee’s main residence at the age of 14 | 1 = village/town, 2 = county, 3 = prefecture-level city/provincial-level municipality (including Chongqing), 4 = Beijing/Tianjin/Shanghai, 5 = overseas, 6 = other |
| Sib | The number of siblings |
| |
| Comf | Father’s political status | 1 = non-communist, 2 = communist | |
| Regf | Father’s registered permanent residence | 1 = other, 2 = rural registered permanent residence, 3 = town registered permanent residence, 4 = county-level city registered permanent residence, 5 = prefecture-level city registered permanent residence, 6 = provincial capital registered permanent residence, 7 = directly-controlled municipality registered permanent residence | |
| Empf | Father’s employment status at the age of 14 | 1 = other, 2 = retirement, 3 = temporary employment, 4 = part-time employment, 5 = full-time employment | |
| Ownf | The ownership of the father’s work organization/company at the age of 14 | 1 = other, 2 = sino-foreign joint venture, 3 = foreign-owned enterprise, 4 = Taiwan, Hong Kong and Macao capital investment, 5 = private ownership, 6 = collective ownership, 7 = state ownership | |
| Orgf | The nature of the father’s work organization/company at the age of 14 | 1 = other, 2 = non-organization/self-employed/self-managed (cooperative) enterprise, 3 = social organization, 4 = institution, 5 = enterprise, 6 = office of the communist party and the government | |
| Comm | Mother’s political status | 1 = non-communist, 2 = communist | |
| Regfm | Mother’s registered permanent residence | 1 = other, 2 = rural registered permanent residence, 3 = town registered permanent residence, 4 = county-level city registered permanent residence, 5 = prefecture-level city registered permanent residence, 6 = provincial capital registered permanent residence, 7 = directly-controlled municipality registered permanent residence | |
| Empm | Mother’s employment status at the age of 14 | 1 = other, 2 = retirement, 3 = temporary employment, 4 = part-time employment, 5 = full-time employment | |
| Ownm | The ownership of the mother’s work organization/company at the age of 14 | 1 = other, 2 = sino-foreign joint venture, 3 = foreign-owned enterprise, 4 = Taiwan, Hong Kong and Macao capital investment, 5 = private ownership, 6 = collective ownership, 7 = state ownership | |
| Orgm | The nature of the mother’s work organization/company at the age of 14 | 1 = other, 2 = non-organization/self-employment/self-management (cooperative) enterprise, 3 = social organization, 4 = institution, 5 = enterprise, 6 = office of the Communist Party and the Government | |
| Family’s cultural capital (Cc) | Eduf | Father’s highest education degree | 1 = illiteracy, 2 = primary school, 3 = middle school, 4 = high school, 5 = technical school, 6 = undergraduate college, 7 = graduate school and higher education |
| Edum | Mother’s highest education degree | 1 = illiteracy, 2 = primary school, 3 = middle school, 4 = high school, 5 = technical school, 6 = undergraduate college, 7 = graduate school and higher education |