Descriptive statistics, analyses samples
| Men | Women | |||
| All | Brothers | All | Sisters | |
| (1) | (2) | (3) | (4) | |
| Observations | 416 003 | 186 369 | 376 413 | 158 524 |
| Number of families | 83 715 | 71 647 | ||
| Age | 42.1 | 42.3 | 42.3 | 42.3 |
| Education (years) | 13.4 | 13.4 | 13.5 | 13.4 |
| Single (%) | 29.2 | 28.1 | 28.3 | 27.5 |
| Childless (%) | 18.6 | 14.9 | 11.8 | 10.8 |
| Employment per 100, 2018 | 86.0 | 87.8 | 81.9 | 84.0 |
| Disability pensions per 100, 2018 | 10.5 | 9.9 | 17.8 | 17.0 |
| Mortality per 1000, 2019 | 35.6 | 32.5 | 23.7 | 22.7 |
Samples are drawn from the November 2003 employment file of the Norwegian welfare administration and are limited to wage earners age 33–52. Unless otherwise stated, descriptive statistics are measured in 2003. Employment and disability statistics are conditional on survival until 2019. See text for further details on sample restrictions.