Table 1 The descriptive statistics of the characteristics of the study population (N = 17,129)
Variables | N (%) | Mean (SD) | Missing rate (%) | |
|---|---|---|---|---|
Depressive symptom | 15,212 (82.1%) | 7.88 (6.65) | 17.9% | |
Childhood SES | ||||
 Mother’s education | 16,411 (95.8%) | 1.26 (0.72) | 4.2% | |
 Father’s education | 15,870 (92.6%) | 1.91 (1.17) | 7.4% | |
 Self-reported family economic status | 17,029 (99.4%) | 2.47 (0.98) | 0.6% | |
Life satisfaction | 17,129 (100%) | 2.10 (0.96) | 0.0% | |
Gender | Male | 8022 (46.8%) | Â | 0.0% |
Female | 9107 (53.2%) | Â | ||
Age | 45~ | 6423 (37.5%) | Â | 0.0% |
60~ | 7784 (45.4%) | Â | ||
75~ | 2922 (17.1%) | Â | ||
Residence | Town | 3932 (23.0%) | Â | 0.0% |
Rural | 13,197 (77.0%) | Â | ||
Education background | Illiterate or semi-illiterate | 7637 (44.6%) | Â | 0.0% |
Primary school or home school | 3849 (22.5%) | Â | ||
Middle school | 3661 (21.4%) | Â | ||
High school or vocational school | 1684 (9.8%) | Â | ||
University degree or above | 298 (1.7%) | Â | ||
Marital status | Have a spouse | 14,525 (84.8%) | Â | 0.0% |
No spouse | 2604 (15.2%) | Â | ||
Social interaction support | Yes | 8980 (52.4%) | Â | 0.1% |
No | 8130 (47.5%) | Â | ||
Childhood parental quarrels | Never | 6847 (40.0%) | Â | 10.2% |
Rarely | 4933 (28.8%) | Â | ||
Sometimes | 2756 (16.1%) | Â | ||
Often | 847 (4.9%) | Â | ||
Childhood parental violence | Never | 12,021 (70.2%) | Â | 10.9% |
Rarely | 1969 (11.5%) | Â | ||
Sometimes | 1008 (5.9%) | Â | ||
Often | 270 (1.6%) | Â | ||
Childhood famine | Yes | 14,428 (84.2%) | Â | 0.0% |
No | 2701 (15.8%) | Â | ||
ADL | Yes | 3746 (21.9%) | Â | 0.0% |
NO | 13,383 (78.1%) | Â | ||
Sleep at night | < 7 h | 9637 (56.3%) |  | 0.1% |
7 ~ 8 | 5826 (34.0%) |  | ||
> 8 h | 1652 (9.6%) |  | ||
Alcohol consumption | Yes | 5665 (33.1%) | Â | 0.1% |
No | 11,445 (66.8%) | Â | ||