Table 2. Prevalence of mental health-related symptoms and multiple risk behaviors by gender and school grade.
| Characteristics |
Primary school stage
( n =3,209) |
Junior high school stage
( n =4,353) |
Senior high school stage
( n =3,865) |
P value | ||||||||
|
Boys
( n =1,722) |
Girls
( n =1,487) |
P
value χ2 test |
Boys
( n =2,365) |
Girls
( n =1,988) |
P
value χ2 test |
Boys
( n =1,996) |
Girls
( n =1,869) |
P
value χ2 test |
||||
| Depression, n (%) | ||||||||||||
| No | 1,537 (89.26) |
1,339 (90.05) |
0.464 | 1,869 (79.03) |
1,511 (76.01) |
0.017 | 1,322 (66.23) |
1,218 (65.17) |
0.486 | <0.001 | ||
| Yes | 185 (10.74) |
148 (9.95) |
496 (20.97) |
477 (23.99) |
674 (33.77) |
651 (34.83) |
||||||
| Anxiety, n (%) | ||||||||||||
| No | 1,429 (82.98) |
1,201 (80.77) |
0.103 | 1,658 (70.11) |
1,249 (62.83) |
<0.001 | 1,119 (56.06) |
919 (49.17) |
<0.001 | <0.001 | ||
| Yes | 293 (17.02) |
286 (19.23) |
707 (29.89) |
739 (37.17) |
877 (43.94) |
950 (50.83) |
||||||
| Stress, n (%) | ||||||||||||
| No | 1,576 (91.52) |
1,357 (91.26) |
0.79 | 2,035 (86.05) |
1,665 (83.75) |
0.035 | 1,508 (75.55) |
1,367 (73.14) |
0.086 | <0.001 | ||
| Yes | 146 (8.48) |
130 (8.74) |
330 (13.95) |
323 (16.25) |
488 (24.45) |
502 (26.86) |
||||||
| Insomnia, n (%) | ||||||||||||
| No | 1,518 (88.15) |
1,307 (87.9) |
0.822 | 1,758 (74.33) |
1,404 (70.62) |
0.006 | 1,339 (67.08) |
1,302 (69.66) |
0.085 | <0.001 | ||
| Yes | 204 (11.85) |
180 (12.1) |
607 (25.67) |
584 (29.38) |
657 (32.92) |
567 (30.34) |
||||||
| Suicidal behavior, n (%) | ||||||||||||
| No | 1,667 (96.81) |
1,424 (95.76) |
0.118 | 2,245 (94.93) |
1,769 (88.98) |
<0.001 | 1,909 (95.64) |
1,687 (90.26) |
<0.001 | <0.001 | ||
| Yes | 55 (3.19) |
63 (4.24) |
120 (5.07) |
219 (11.02) |
87 (4.36) |
182 (9.74) |
||||||
| Self-harm behavior, n (%) | ||||||||||||
| No | 1,579 (91.70) |
1,360 (91.46) |
0.81 | 2,066 (87.36) |
1,631 (82.04) |
<0.001 | 1,772 (88.78) |
1,566 (83.79) |
<0.001 | <0.001 | ||
| Yes | 143 (8.30) |
127 (8.54) |
299 (12.64) |
357 (17.96) |
224 (11.22) |
303 (16.21) |
||||||
| Suicidal ideation, n (%) | ||||||||||||
| No | 1,636 (95.01) |
1,387 (93.28) |
0.036 | 2,166 (91.59) |
1,671 (84.05) |
<0.001 | 1,835 (91.93) |
1,609 (86.09) |
<0.001 | <0.001 | ||
| Yes | 86 (4.99) |
100 (6.72) |
199 (8.41) |
317 (15.95) |
161 (8.07) |
260 (13.91) |
||||||
| Drink history, n (%) | ||||||||||||
| No | 1,606 (93.26) |
1,431 (96.23) |
<0.001 | 1,922 (81.27) |
1,717 (86.37) |
<0.001 | 1,196 (59.92) |
1,438 (76.94) |
<0.001 | <0.001 | ||
| Yes | 116 (6.74) |
56 (3.77) |
443 (18.73) |
271 (13.63) |
800 (40.08) |
431 (23.06) |
||||||
| Smoke history, n (%) | ||||||||||||
| No | 1,672 (97.1) |
1,475 (99.19) |
<0.001 | 2,158 (91.25) |
1,908 (95.98) |
<0.001 | 1,669 (83.62) |
1,744 (93.31) |
<0.001 | <0.001 | ||
| Yes | 50 (2.90) |
12 (0.81) |
207 (8.75) |
80 (4.02) |
327 (16.38) |
125 (6.69) |
||||||