Demographic characteristics of the study sample (N=152)
| Characteristics | n (%) |
| Gender | |
| Female | 152 (100.0) |
| Male | 0 (0.0) |
| Age (years) | |
| 18–30 | 96 (63.2) |
| 31–39 | 22 (14.5) |
| ≥40 | 34 (22.4) |
| Level of education | |
| High school | 14 (9.2) |
| Secondary school | 39 (25.7) |
| Junior college | 60 (39.5) |
| Bachelor | 39 (25.7) |
| Ethnicity | |
| Han | 111 (73.0) |
| Minorities | 41 (27.0) |