Table 1.
Descriptive statistics.
| Var name | Obs | Mean | SD | Min | Max |
|---|---|---|---|---|---|
| cognition | 27,529 | 7.693 | 3.741 | 0.000 | 20.000 |
| PA | 27,529 | 0.915 | 0.278 | 0.000 | 1.000 |
| age | 27,529 | 59.932 | 9.035 | 45.000 | 108.000 |
| gender | 27,529 | 0.508 | 0.500 | 0.000 | 1.000 |
| health | 27,529 | 3.070 | 0.967 | 1.000 | 5.000 |
| marriage | 27,529 | 0.893 | 0.309 | 0.000 | 1.000 |
| education | 27,529 | 1.171 | 0.432 | 1.000 | 3.000 |
| rural | 27,529 | 0.745 | 0.436 | 0.000 | 1.000 |
| smoking | 27,529 | 0.443 | 0.497 | 0.000 | 1.000 |
| drinking | 27,529 | 0.474 | 0.499 | 0.000 | 1.000 |
| hchild | 27,529 | 2.569 | 1.295 | 1.000 | 10.000 |
| coreside | 27,529 | 0.494 | 0.500 | 0.000 | 1.000 |