Table 1 Demographics of the study participants
Variable | Frequency | Percent% |
|---|---|---|
Gender | ||
 Male | 698 | 39.52% |
 Female | 1068 | 60.48% |
Grade | ||
 1 st | 69 | 3.91% |
 2nd | 1008 | 57.08% |
 3rd | 613 | 34.71% |
 4 th | 76 | 4.3% |
Family Income | ||
 3000–10000 RMB | 1336 | 75.65% |
 10,000–20000 RMB | 339 | 19.2% |
 20,000-above RMB | 91 | 5.15% |
Total | 1766 | 100% |