Table 2.
Socio-economic and demographic characteristics of study participants
| Total (N=2688) | Males (N=1324) | Females (N=1329) | t/χ2 | |
|---|---|---|---|---|
| Age (years, mean±SD) |
17.17±0.72 |
17.20±0.74 |
17.14±0.70 |
1.81 a |
| Family income (%) |
|
|
|
0.94 b |
| Low (<1500) |
15.9 |
15.2 |
16.4 |
|
| Medium (1500–2499) |
33.3 |
33.2 |
33.6 |
|
| High (≥2500) |
50.8 |
51.6 |
50.0 |
|
| Family structure |
|
|
|
7.73b |
| Single parent family |
7.8 |
8.1 |
7.2 |
|
| Nuclear family |
66.0 |
63.7 |
68.5 |
|
| Large family |
26.2 |
28.1 |
24.2 |
|
| Father’s education level (%) |
|
|
|
10.83** b |
| Middle school and below |
7.6 |
8.5 |
6.9 |
|
| High school |
45.6 |
42.4 |
48.7 |
|
| College and above |
46.8 |
49.2 |
44.5 |
|
| Mother’s education level (%) |
|
|
|
7.08* b |
| Middle school and below |
9.4 |
9.3 |
9.6 |
|
| High school |
50.8 |
48.4 |
53.1 |
|
| College and above | 39.9 | 42.3 | 37.3 |
Family income was expressed in RMB(yuan)/person/month.
a Independent-samples t test.
b K*2 Chi-square Test.
* P<0.05.
** P<0.01.