Table 1.
Socio-demographic characteristics of the surveyed children and their parents
| Characteristics | n | % |
|---|---|---|
| Age (years old) | ||
| 7–8 | 376 | 28.42 |
| 9–10 | 436 | 32.96 |
| 11–12 | 511 | 38.62 |
| Gender | ||
| Boy | 745 | 56.31 |
| Girl | 578 | 43.69 |
| Father’s educational background | ||
| Not educated | 34 | 2.57 |
| Primary | 1066 | 80.57 |
| Junior high | 193 | 14.59 |
| Senior high and above | 30 | 2.27 |
| Mother’s educational background | ||
| Not educated | 86 | 6.50 |
| Primary | 1097 | 82.92 |
| Junior high | 117 | 8.84 |
| Senior high and above | 23 | 1.73 |
| Father’s occupation | ||
| Labour/manual worker | 703 | 53.14 |
| Self-employed | 24 | 1.81 |
| Business service people | 343 | 25.93 |
| Agricultural labour | 60 | 4.54 |
| Others | 193 | 14.59 |
| Mother’s occupation | ||
| Labour/manual worker | 598 | 45.20 |
| Self-employed | 9 | 0.68 |
| Business service people | 312 | 23.58 |
| Agricultural labour | 60 | 4.54 |
| Others | 344 | 26.00 |
| Family income (annual income per person, Yuan)a | ||
| Mean (SD) | 14404(16632) | |
| Median | 10000 | |
| Total | 1323 | 100.00 |
aAverage family annual income of migrant population was lower than the annual disposable income which was 40188 Yuan of local urban residents and that of local rural residents which was 17401 Yuan respectively (Data source: Shanghai Statistics Bureau, 2012 Shanghai National Economy and Social Development Statistical Bulletin, www.http://www.stats-sh.gov.cn/sjfb/201302/253153.html)