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Table 1 Injury incidence and the relationship between the demographic and behavior characteristics and injuries in a sample of 4,138 students in Shenzhen, China

From: Characteristics and related factors of nonfatal injuries among adolescents and college students in Shenzhen city of China

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

  
  1. BMI, body mass index; PE, physical education.