Sample characteristics by eligibility status in the 2012 Constances study (n=18 929)
| Percentage* | Difference (p value) | ||
| Ineligible (born before the 1 January 1953) (n=9635) | Eligible (born after the 1 January 1953) (n=9293) | ||
| Mean age (SD) | 63.68 (1.65) | 59.72 (1.65) | <0.001 |
| Gender | 0.10 | ||
| Male | 48.75 | 48.01 | |
| Female | 51.25 | 51.99 | |
| Father’s SEP during adolescence | 0.19 | ||
| High SEP | 14.86 | 15.47 | |
| Intermediate SEP | 38.99 | 38.77 | |
| Low SEP | 46.14 | 45.75 | |
| Father’s region of origin | 0.09 | ||
| France (mainland and overseas territories and departments) | 84.65 | 84.70 | |
| Europe | 8.40 | 7.94 | |
| Northern Africa | 3.87 | 4.50 | |
| Other | 3.08 | 2.86 | |
| Educational attainment | 0.17 | ||
| Primary | 3.35 | 3.24 | |
| Secondary | 53.96 | 53.99 | |
| Tertiary | 42.70 | 42.77 | |
| Respondent’s SEP | 0.12 | ||
| High SEP | 31.82 | 28.35 | |
| Intermediate SEP | 57.82 | 60.39 | |
| Low SEP | 10.36 | 11.26 | |
*Percentages unless otherwise indicated. Only respondents born within 48 months of the cut-off are included in our sample.
SEP, socioeconomic position.