Variables | Code | Value | Samples | Average | Standard deviation |
---|---|---|---|---|---|
Gender |  0 | Female | 396 | 0.6857 | 0.4644 |
 | 1 | Male | 864 |  |  |
Age | Â | [32.91,59.99] | 1260 | 48.6123 | 6.1877 |
Education level | 1 | Primary school | 351 | 1.9873 | 0.7727 |
 | 2 | Secondary school | 607 |  |  |
 | 3 | High school (including technical secondary school and vocational school) | 269 |  |  |
 | 4 | University and college (including master’s degree or above) | 33 |  |  |
Household registration | 0 | Rural | 1023 | 0.1881 | 0.3909 |
 | 1 | Urban | 237 |  |  |
Marital status | 1 | Single | 10 | 2.0325 | 0.2177 |
 | 2 | Married | 1199 |  |  |
 | 3 | Others (including divorced, widowed, and separated) | 51 |  |  |
Yearly income | Â | [0,288000] | 1260 | 10353.85 | 24869.17 |
Occupational status in 1989 | 1 | Service class | 50 | 4.3548 | 1.1289 |
 | 2 | Regular non-physical class | 83 |  |  |
 | 3 | Skilled workers | 109 |  |  |
 | 4 | Half-skilled workers | 146 |  |  |
 | 5 | Farmers | 872 |  |  |
Occupational status in 2009 | 1 | Service class | 103 | 4.0492 | 1.2588 |
 | 2 | Regular non-physical class | 69 |  |  |
 | 3 | Skilled workers | 143 |  |  |
 | 4 | Half-skilled workers | 293 |  |  |
 | 5 | Farmers | 652 |  |  |
Health status | 0 | 1088 | 1260 | 0.1365 | 0.3435 |
 | 1 | 172 |  |  |  |
Life statisfaction | 0 | Fair (including good, very good) | 678 | 0.4619 | 0.4987 |
 | 1 | Others (including middle, bad, very bad) | 582 |  |  |