| Categories | Sample | Proportion/% |
| Categories | Sample | Proportion/% |
sex | male | 124 | 29.20 | age | <16 | 5 | 1.20 |
female | 300 | 70.80 | 16 ~ 25 | 319 | 75.20 | ||
education | young school | 8 | 1.90 | 26 ~ 35 | 90 | 21.20 | |
high school | 14 | 3.30 | 36 ~ 45 | 7 | 1.70 | ||
colle./undergra. | 268 | 63.20 | 46 ~ 55 | 1 | 0.20 | ||
graduate | 134 | 31.60 | >55 | 2 | 0.50 | ||
occupation | student | 265 | 62.50 | income (RMB) | <1000 | 143 | 33.70 |
teacher | 21 | 5.00 | 1001 - 2000 | 103 | 24.30 | ||
clerk | 84 | 19.80 | 2001 - 3000 | 38 | 9.00 | ||
civil servants | 18 | 4.20 | 3001 - 4000 | 29 | 6.80 | ||
self-employed | 4 | 0.90 | 4001 - 5000 | 19 | 4.50 | ||
liberal | 17 | 4.00 | 5001 - 7000 | 39 | 9.20 | ||
unemployed | 9 | 2.10 | 7001 - 10,000 | 23 | 5.40 | ||
other | 6 | 1.40 | >10,000 | 30 | 7.10 |