Table 1.
Descriptive statistics (N = 10,963)
| N (%) | Mean (SD) | Missingness (%) | |
|---|---|---|---|
| Frailty index | |||
| 2011 | 0.16 (0.11) | 6.4 | |
| 2013 | 0.16 (0.10) | 6.8 | |
| 2015 | 0.18 (0.12) | 4.5 | |
| 2018 | 0.21 (0.13) | 7.1 | |
| Childhood experiences | |||
| ACEs | 0.13 (0.11) | 4.5 | |
| Self-rated childhood SES | 1.45 (0.97) | 0.7 | |
| Father’s education | 8.3 | ||
| Illiterate | 6066 (55.3) | ||
| Literate | 3988 (36.4) | ||
| Childhood self-rated health | 2.33 (1.01) | 0.7 | |
| Objective childhood health and health care | 3.66 (0.58) | 2.2 | |
| Control variables | |||
| Age | 58.29 (8.83) | 0.0 | |
| Gender | 0.0 | ||
| Male | 5154 (47.0) | ||
| Female | 5809 (53.0) | ||
| Hukou status | 0.7 | ||
| Agricultural | 9047 (82.5) | ||
| Nonagricultural | 1837 (16.8) | ||
| Place of residence | 0.0 | ||
| Urban | 3750 (34.2) | ||
| Rural | 7213 (65.8) | ||
| Marital status | 0.0 | ||
| Married | 9162 (83.6) | ||
| Other marital status | 1798 (16.4) | ||
| Education | 0.0 | ||
| Illiterate | 5135 (46.8) | ||
| Had received formal education or higher | 5828 (53.2) | ||
| Drank any alcohol last year | 3627 (33.1) | 0.4 | |
| Smoke at present | 3181 (29.0) | 2.8 | |
| Body mass index | 16.7 | ||
| Normal (18.5–23.9) | 4835 (44.1) | ||
| Underweight (lower than 18.5) | 587 (5.4) | ||
| Overweight (24–27.9) | 2631 (24.0) | ||
| Obesity (28 and above) | 1076 (9.8) | ||
| Household per capita consumption | 6865.64 (9077.86) | 15.1 | |