受访者调查时点年龄（岁）。CGSS 早期版本以出生年份记录，需用调查年份相减。CHARLS 限 45 岁及以上，CFPS / CGSS 覆盖 16+。
常用 age 与 age² 一起进入回归捕捉非线性效应（生命周期假说）。
Manually curated mapping of the same concept to its variable name in each database.
| dataset | variable | label | type/role | note |
|---|---|---|---|---|
| ceps2015 中国教育追踪调查2015 | age | 年龄 | continuous / control | — |
| cfps2010 中国家庭追踪调查2010 | cfps_age | 年龄 | continuous / control | — |
| cfps2012 中国家庭追踪调查2012 | cfps_age | 年龄 | continuous / control | — |
| cfps2014 中国家庭追踪调查2014 | cfps_age | 年龄 | continuous / control | — |
| cfps2016 中国家庭追踪调查2016 | cfps_age | 年龄 | continuous / control | — |
| cfps2018 中国家庭追踪调查2018 | cfps_age | 年龄 | continuous / control | — |
| cfps2020 中国家庭追踪调查 2020 | cfps_age | 年龄 | continuous / control | — |
| cgss2010 中国综合社会调查2010 | a301 | 年龄 | continuous / control | — |
| cgss2012 中国综合社会调查2012 | a301 | 年龄 | continuous / control | — |
| cgss2013 中国综合社会调查2013 | a301 | 年龄 | continuous / control | — |
| cgss2015 中国综合社会调查2015 | a301 | 年龄 | continuous / control | — |
| cgss2017 中国综合社会调查2017 | a301 | 年龄 | continuous / control | — |
| cgss2021 中国综合社会调查 2021 | a3a | 出生年份 | continuous / control | — |
| charls2011 中国健康与养老追踪调查2011 | age | 年龄 | continuous / control | — |
| charls2013 中国健康与养老追踪调查2013 | age | 年龄 | continuous / control | — |
| charls2015 中国健康与养老追踪调查2015 | age | 年龄 | continuous / control | — |
| charls2020 中国健康与养老追踪调查2020 | age | 年龄 | continuous / control | — |
| clds2012 中国劳动力动态调查2012 | age | 年龄 | continuous / control | — |
| clds2014 中国劳动力动态调查2014 | age | 年龄 | continuous / control | — |
| clds2016 中国劳动力动态调查2016 | age | 年龄 | continuous / control | — |
| ipums_usa IPUMS USA Harmonized Microdata | AGE | 年龄 | continuous / control | — |
| charls2018 中国健康与养老追踪调查 2018 | ba002_1 | 出生年份 | continuous / control | 出生年份，需用调查年份换算年龄 |
| chip2013 中国居民收入调查 CHIP 2013 | age | 年龄 | continuous / control | — |
| chip2018 中国居民收入调查 CHIP 2018 | age | 年龄 | continuous / control | — |
| acs2022 American Community Survey 2022 1-Year PUMS | AGEP | Age | continuous / control | — |
| cps_asec_2023 CPS Annual Social and Economic Supplement 2023 (March CPS) | A_AGE | Age | continuous / control | — |
| gss2022 General Social Survey 2022 | age | Age of Respondent | continuous / control | — |
| hrs2018 Health and Retirement Study 2018 | QA019 | Age at Interview | continuous / control | — |
| nhanes2018 NHANES 2017-2018 Cycle | RIDAGEYR | Age in Years | continuous / control | — |
| pisa2022 PISA 2022 Student Questionnaire | AGE | Age | continuous / control | 学生测试时年龄 |
| wvs7 World Values Survey Wave 7 (2017-2022) | Q262 | Age | continuous / control | — |
| ess10 European Social Survey Round 10 (2020-2022) | agea | Age | continuous / control | — |
| anes2020 American National Election Studies 2020 Time Series | V201507x | Age | continuous / control | — |
| brfss2022 Behavioral Risk Factor Surveillance System 2022 | _AGE80 | Imputed Age (capped 80) | continuous / control | 插补年龄，80 岁封顶 |
| dhs Demographic and Health Surveys (Standard DHS, Individual Recode) | v012 | Current Age | continuous / control | 当前年龄 |
| elsa2018 English Longitudinal Study of Ageing Wave 9 (2018-2019) | indager | Age | continuous / control | — |
| eusilc2022 EU-SILC 2022 Cross-sectional UDB | RB082 | Age In Completed Years At The Time Of The | string | 访谈时年龄 |
| gsoep German Socio-Economic Panel (SOEP-Core v38) | d11101 | Age | continuous / control | — |
| nlsy97 National Longitudinal Survey of Youth 1997 | KEY_BDATE_Y_1997 | Birth Year | continuous / control | 出生年份，需换算年龄 |
| psid2019 Panel Study of Income Dynamics 2019 | ER34516 | Age of Individual | continuous / control | — |
| share_w8 SHARE Wave 8 (2019-2020) | age | Age | continuous / control | — |
| ukhls Understanding Society: UK Household Longitudinal Study | dvage | Age (Derived) | continuous / control | — |