Table 1 Socio-demographic characteristics of study participants (N = 1,853)
| Â | n (%) | M (SD) | Range |
|---|---|---|---|
Gender | Â | Â | Â |
Male | 1125 (60.7) | Â | Â |
Female | 728 (39.3) | Â | Â |
Age (years) |  | 51.0 (12.1) | 18–80 |
Age of disability onset |  | 19.6 (21.3) | 0–77 |
Marital status | Â | Â | Â |
  Married/cohabiting | 1353 (73.0) |  |  |
  Single/widowed | 500 (27.0) |  |  |
Education | Â | Â | Â |
  Illiterate | 229 (12.3) |  |  |
  Primary school | 624 (33.7) |  |  |
  Middle /high school | 963 (52.0) |  |  |
  College | 37 (2.0) |  |  |
Employment status | Â | Â | Â |
  Yes | 552 (29.8) |  |  |
  No | 1301 (70.2) |  |  |
Residency | Â | Â | Â |
Urban area | 828 (44.7) | Â | Â |
Suburban area | 1025 (55.3) | Â | Â |
Yearly income (CNY, 10 CNY = 1.43 USD) |  |  |  |
  < 30,000 | 1470 (79.4) |  |  |
  ≥ 30,000 | 383 (20.6) |  |  |
Comorbidity | Â | Â | Â |
  Yes | 719 (38.8) |  |  |
  No | 1134 (61.2) |  |  |