|
Variables
|
N
|
Injury
|
Non-injury
|
χ
2
|
P
|
|---|
| | |
n
|
%
|
n
|
%
| | |
|---|
|
Gender
| | | | | | | |
|
Male
|
2,134
|
365
|
17.10
|
1,769
|
82.90
|
48.02
|
<0.001
|
|
Female
|
2,004
|
195
|
9.73
|
1,809
|
90.27
| | |
|
Registered permanent residence
| | | | | | | |
|
Local
|
3,026
|
414
|
13.68
|
2,612
|
86.32
|
0.21
|
0.645
|
|
Non-local
|
1,112
|
146
|
13.13
|
966
|
86.87
| | |
|
BMI Category
| | | | | | | |
|
Normal weight
|
3,727
|
492
|
13.20
|
3,235
|
86.80
|
3.96
|
0.138
|
|
Overweight
|
308
|
49
|
15.91
|
259
|
84.09
| | |
|
Obesity
|
103
|
19
|
18.45
|
84
|
81.55
| | |
|
Grade
| | | | | | | |
|
Primary school
|
2,302
|
327
|
14.21
|
1,975
|
85.79
|
2.62
|
0.270
|
|
Secondary school
|
1,138
|
150
|
13.18
|
988
|
86.82
| | |
|
College
|
698
|
83
|
11.89
|
615
|
88.11
| | |
|
Self-perceived agrypnia
| | | | | | | |
|
No
|
1,412
|
130
|
9.21
|
1,282
|
90.79
|
57.64
|
<0.001
|
|
Sometimes
|
2,260
|
324
|
14.34
|
1,936
|
85.66
| | |
|
Often
|
466
|
106
|
22.75
|
360
|
77.25
| | |
|
Having PE class
| | | | | | | |
|
≤2 classes/week
|
2,184
|
261
|
11.95
|
1,923
|
88.05
|
9.90
|
0.002
|
|
>2 classes/week
|
1,954
|
299
|
15.30
|
1,655
|
84.70
| | |
|
Sexual behavior
| | | | | | | |
|
No
|
3,924
|
509
|
12.97
|
3,415
|
87.03
|
20.45
|
<0.001
|
|
Yes
|
214
|
51
|
23.83
|
163
|
76.17
| | |
|
Trying smoking
| | | | | | | |
|
No
|
3,074
|
378
|
12.30
|
2,696
|
87.70
|
15.62
|
<0.001
|
|
Yes
|
1,064
|
182
|
17.11
|
882
|
82.89
| | |
|
Alcohol consumption
| | | | | | | |
|
No
|
1,505
|
159
|
10.56
|
1,346
|
89.44
|
17.81
|
<0.001
|
|
Yes
|
2,633
|
401
|
15.23
|
2,232
|
84.77
| | |
|
Physical fighting
| | | | | | | |
|
No
|
3,360
|
368
|
10.95
|
2,992
|
89.05
|
101.72
|
<0.001
|
|
Yes
|
778
|
192
|
24.68
|
586
|
75.32
| | |
|
Unsafe cycling
| | | | | | | |
|
No
|
3,123
|
355
|
11.37
|
2,768
|
88.63
|
51.04
|
<0.001
|
|
Yes
|
1,015
|
205
|
20.20
|
810
|
79.80
| | |
|
Skating in unsafe places
| | | | | | | |
|
No
|
3,941
|
510
|
12.94
|
3,431
|
87.06
|
24.81
|
<0.001
|
|
Yes
|
197
|
50
|
25.38
|
147
|
74.62
| | |
|
Walking on the zebra crossing or pedestrian overpass or underpass
|
|
No
|
1,976
|
313
|
15.84
|
1,663
|
84.16
|
17.20
|
<0.001
|
|
Yes
|
2,162
|
247
|
11.42
|
1,915
|
88.58
| | |
|
Swimming in unsafe places
| | | | | | | |
|
No
|
3,820
|
491
|
12.85
|
3,329
|
87.15
|
19.63
|
<0.001
|
|
Yes
|
318
|
69
|
21.70
|
249
|
78.30
| | |
- BMI, body mass index; PE, physical education.
