Table 1.
Sample characteristics of the study population (baseline; N = 2615).
| Characteristics | Mean | SD |
|---|---|---|
| Age | 18.82 | 0.85 |
| N | % | |
| aGender: female | 1752 | 67.0 |
| aResidence: urban | 910 | 34.8 |
| Child: single | 927 | 35.4 |
| Minority: Han | 2538 | 97.1 |
| Family history of psychosis: yes | 123 | 4.7 |
| Family income: ≥ average | 2085 | 79.7 |
| Father education level: ≥ High school | 1175 | 44.9 |
| aMother education level: ≥ High school | 891 | 34.1 |
aThere was significantly difference between factors and individual change of DS score using linear regressions (p = 0.009). Thus, gender, residence and the education level of mother would be used as the covariates in subsequent analysis.